1013557056 has 28 divisors (see below), whose sum is σ = 2681703552. Its totient is φ = 337852288.

The previous prime is 1013557007. The next prime is 1013557057. The reversal of 1013557056 is 6507553101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013557057) 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, 2639280 + ... + 2639663.

Almost surely, 2^1013557056 is an apocalyptic number.

1013557056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1013557056 is an abundant number, since it is smaller than the sum of its proper divisors (1668146496).

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

1013557056 is an equidigital number, since it uses as much as digits as its factorization.

1013557056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278958 (or 5278948 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 1013557056 is about 31836.4108529840. The cubic root of 1013557056 is about 1004.4987495693.

The spelling of 1013557056 in words is "one billion, thirteen million, five hundred fifty-seven thousand, fifty-six".