1056133257 has 8 divisors (see below), whose sum is σ = 1408339584. Its totient is φ = 704007888.

The previous prime is 1056133237. The next prime is 1056133283. The reversal of 1056133257 is 7523316501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1056133257 is a prime.

It is a super-2 number, since 2×1056133257² = 2230834913082856098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056133237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24048 + ... + 51870.

It is an arithmetic number, because the mean of its divisors is an integer number (176042448).

Almost surely, 2^1056133257 is an apocalyptic number.

It is an amenable number.

1056133257 is a deficient number, since it is larger than the sum of its proper divisors (352206327).

1056133257 is a wasteful number, since it uses less digits than its factorization.

1056133257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40479.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 1056133257 is about 32498.2039042160. The cubic root of 1056133257 is about 1018.3715065444.

Adding to 1056133257 its reverse (7523316501), we get a palindrome (8579449758).

The spelling of 1056133257 in words is "one billion, fifty-six million, one hundred thirty-three thousand, two hundred fifty-seven".