5555431557 has 12 divisors (see below), whose sum is σ = 8641782604. Its totient is φ = 3418727040.

The previous prime is 5555431517. The next prime is 5555431577. The reversal of 5555431557 is 7551345555.

5555431557 is a `hidden beast` number, since 5 + 5 + 55 + 43 + 1 + 557 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 659770596 + 4895660961 = 25686^2 + 69969^2 .

It is not a de Polignac number, because 5555431557 - 2⁶ = 5555431493 is a prime.

It is a super-2 number, since 2×5555431557² = 61725639569022888498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555431517) 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, 23741044 + ... + 23741277.

Almost surely, 2^5555431557 is an apocalyptic number.

It is an amenable number.

5555431557 is a deficient number, since it is larger than the sum of its proper divisors (3086351047).

5555431557 is a wasteful number, since it uses less digits than its factorization.

5555431557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47482340 (or 47482337 counting only the distinct ones).

The product of its digits is 1312500, while the sum is 45.

The square root of 5555431557 is about 74534.7674377535. The cubic root of 5555431557 is about 1771.0844383936.

The spelling of 5555431557 in words is "five billion, five hundred fifty-five million, four hundred thirty-one thousand, five hundred fifty-seven".