1056656261 has 8 divisors (see below), whose sum is σ = 1063964160. Its totient is φ = 1049360368.

The previous prime is 1056656231. The next prime is 1056656269. The reversal of 1056656261 is 1626566501.

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

It is a cyclic number.

It is not a de Polignac number, because 1056656261 - 2¹⁴ = 1056639877 is a prime.

It is a super-2 number, since 2×1056656261² = 2233044907821000242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056656269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238115 + ... + 242511.

It is an arithmetic number, because the mean of its divisors is an integer number (132995520).

Almost surely, 2^1056656261 is an apocalyptic number.

It is an amenable number.

1056656261 is a deficient number, since it is larger than the sum of its proper divisors (7307899).

1056656261 is a wasteful number, since it uses less digits than its factorization.

1056656261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 1056656261 is about 32506.2495683522. The cubic root of 1056656261 is about 1018.5395801830.

The spelling of 1056656261 in words is "one billion, fifty-six million, six hundred fifty-six thousand, two hundred sixty-one".