1055887731 has 48 divisors (see below), whose sum is σ = 1683418464. Its totient is φ = 659073024.

The previous prime is 1055887717. The next prime is 1055887739. The reversal of 1055887731 is 1377885501.

1055887731 is a `hidden beast` number, since 10 + 558 + 87 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 1055887731 - 2⁷ = 1055887603 is a prime.

It is a super-2 number, since 2×1055887731² = 2229797800952656722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055887739) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 961975 + ... + 963071.

It is an arithmetic number, because the mean of its divisors is an integer number (35071218).

Almost surely, 2^1055887731 is an apocalyptic number.

1055887731 is a deficient number, since it is larger than the sum of its proper divisors (627530733).

1055887731 is a wasteful number, since it uses less digits than its factorization.

1055887731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 45.

The square root of 1055887731 is about 32494.4261528035. The cubic root of 1055887731 is about 1018.2925846662.

It can be divided in two parts, 10558 and 87731, that added together give a palindrome (98289).

The spelling of 1055887731 in words is "one billion, fifty-five million, eight hundred eighty-seven thousand, seven hundred thirty-one".