5551439256 has 48 divisors (see below), whose sum is σ = 16401981960. Its totient is φ = 1682254080.

The previous prime is 5551439251. The next prime is 5551439281. The reversal of 5551439256 is 6529341555.

5551439256 is a `hidden beast` number, since 5 + 551 + 4 + 3 + 92 + 5 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551439251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3503905 + ... + 3505488.

Almost surely, 2^5551439256 is an apocalyptic number.

It is an amenable number.

5551439256 is an abundant number, since it is smaller than the sum of its proper divisors (10850542704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5551439256 is a wasteful number, since it uses less digits than its factorization.

5551439256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009416 (or 7009409 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The square root of 5551439256 is about 74507.9811563835. The cubic root of 5551439256 is about 1770.6600851266.

The spelling of 5551439256 in words is "five billion, five hundred fifty-one million, four hundred thirty-nine thousand, two hundred fifty-six".