56537867 has 2 divisors, whose sum is σ = 56537868. Its totient is φ = 56537866.

The previous prime is 56537861. The next prime is 56537879. The reversal of 56537867 is 76873565.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56537867 is a prime.

It is not a weakly prime, because it can be changed into another prime (56537861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28268933 + 28268934.

It is an arithmetic number, because the mean of its divisors is an integer number (28268934).

Almost surely, 2^56537867 is an apocalyptic number.

56537867 is a deficient number, since it is larger than the sum of its proper divisors (1).

56537867 is an equidigital number, since it uses as much as digits as its factorization.

56537867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 47.

The square root of 56537867 is about 7519.1666426540. The cubic root of 56537867 is about 383.8072197672.

The spelling of 56537867 in words is "fifty-six million, five hundred thirty-seven thousand, eight hundred sixty-seven".