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48307204521 = 34244212
BaseRepresentation
bin101100111111010101…
…010111000110101001
311121200121112020210000
4230333111113012221
51242413121021041
634105251013213
73330045314652
oct547725270651
9147617466700
1048307204521
111953a180824
129441b9a209
13472b1467b4
1424a39a2529
1513cae65bb6
hexb3f5571a9

48307204521 has 15 divisors (see below), whose sum is σ = 72165569223. Its totient is φ = 32203484280.

The previous prime is 48307204501. The next prime is 48307204549. The reversal of 48307204521 is 12540270384.

It is a happy number.

The square root of 48307204521 is 219789.

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

It can be written as a sum of positive squares in only one way, i.e., 3956121 + 48303248400 = 1989^2 + 219780^2 .

It is not a de Polignac number, because 48307204521 - 29 = 48307204009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48307204501) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1965891 + ... + 1990311.

Almost surely, 248307204521 is an apocalyptic number.

48307204521 is the 219789-th square number.

48307204521 is the 109895-th centered octagonal number.

It is an amenable number.

48307204521 is a deficient number, since it is larger than the sum of its proper divisors (23858364702).

48307204521 is an frugal number, since it uses more digits than its factorization.

48307204521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48854 (or 24424 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

Multiplying 48307204521 by its sum of digits (36), we get a square (1739059362756 = 13187342).

The spelling of 48307204521 in words is "forty-eight billion, three hundred seven million, two hundred four thousand, five hundred twenty-one".

Divisors: 1 3 9 27 81 24421 73263 219789 659367 1978101 596385241 1789155723 5367467169 16102401507 48307204521