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49999481 = 77142783
BaseRepresentation
bin1011111010111…
…0111001111001
310111002020101122
42332232321321
5100244440411
64543355025
71144663040
oct276567171
9114066348
1049999481
1126250394
12148b2a75
13a4880bc
1468d7557
1545c99db
hex2faee79

49999481 has 4 divisors (see below), whose sum is σ = 57142272. Its totient is φ = 42856692.

The previous prime is 49999471. The next prime is 49999489. The reversal of 49999481 is 18499994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-49999481 is a prime.

It is a super-2 number, since 2×499994812 = 4999896200538722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49999489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571385 + ... + 3571398.

It is an arithmetic number, because the mean of its divisors is an integer number (14285568).

Almost surely, 249999481 is an apocalyptic number.

It is an amenable number.

49999481 is a deficient number, since it is larger than the sum of its proper divisors (7142791).

49999481 is an equidigital number, since it uses as much as digits as its factorization.

49999481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142790.

The product of its digits is 839808, while the sum is 53.

The square root of 49999481 is about 7071.0311129283. The cubic root of 49999481 is about 368.4018751847.

The spelling of 49999481 in words is "forty-nine million, nine hundred ninety-nine thousand, four hundred eighty-one".

Divisors: 1 7 7142783 49999481