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48206154481 = 2926721132
BaseRepresentation
bin101100111001010011…
…111000101011110001
311121102120101101011221
4230321103320223301
51242211233420411
634051241105041
73324410360302
oct547123705361
9147376341157
1048206154481
11194981323a1
129414188181
134713226084
1424943ba7a9
1513c2155071
hexb394f8af1

48206154481 has 27 divisors (see below), whose sum is σ = 51134520801. Its totient is φ = 45443443584.

The previous prime is 48206154421. The next prime is 48206154487. The reversal of 48206154481 is 18445160284.

The square root of 48206154481 is 219559.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 16634550625 + 31571603856 = 128975^2 + 177684^2 .

It is not a de Polignac number, because 48206154481 - 217 = 48206023409 is a prime.

It is a super-2 number, since 2×482061544812 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48206154487) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 426603081 + ... + 426603193.

Almost surely, 248206154481 is an apocalyptic number.

48206154481 is the 219559-th square number.

48206154481 is the 109780-th centered octagonal number.

It is an amenable number.

48206154481 is a deficient number, since it is larger than the sum of its proper divisors (2928366320).

48206154481 is an frugal number, since it uses more digits than its factorization.

48206154481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 48206154481 in words is "forty-eight billion, two hundred six million, one hundred fifty-four thousand, four hundred eighty-one".

Divisors: 1 29 67 113 841 1943 3277 4489 7571 12769 56347 95033 130181 219559 370301 507257 855523 3775249 6367211 10738729 14710453 24810167 57320041 426603137 719494843 1662281189 48206154481