56731651 has 2 divisors, whose sum is σ = 56731652. Its totient is φ = 56731650.

The previous prime is 56731621. The next prime is 56731657. The reversal of 56731651 is 15613765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56731651 - 2⁹ = 56731139 is a prime.

It is not a weakly prime, because it can be changed into another prime (56731657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28365825 + 28365826.

It is an arithmetic number, because the mean of its divisors is an integer number (28365826).

Almost surely, 2^56731651 is an apocalyptic number.

56731651 is a deficient number, since it is larger than the sum of its proper divisors (1).

56731651 is an equidigital number, since it uses as much as digits as its factorization.

56731651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 56731651 is about 7532.0416222960. The cubic root of 56731651 is about 384.2452205221.

The spelling of 56731651 in words is "fifty-six million, seven hundred thirty-one thousand, six hundred fifty-one".