1056657451 has 2 divisors, whose sum is σ = 1056657452. Its totient is φ = 1056657450.

The previous prime is 1056657439. The next prime is 1056657473. The reversal of 1056657451 is 1547566501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1056657451 - 2⁵ = 1056657419 is a prime.

It is a super-2 number, since 2×1056657451² = 2233049937507634802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056657401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528328725 + 528328726.

It is an arithmetic number, because the mean of its divisors is an integer number (528328726).

Almost surely, 2^1056657451 is an apocalyptic number.

1056657451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056657451 is an equidigital number, since it uses as much as digits as its factorization.

1056657451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 1056657451 is about 32506.2678725196. The cubic root of 1056657451 is about 1018.5399625406.

The spelling of 1056657451 in words is "one billion, fifty-six million, six hundred fifty-seven thousand, four hundred fifty-one".