56438537 has 2 divisors, whose sum is σ = 56438538. Its totient is φ = 56438536.

The previous prime is 56438477. The next prime is 56438561. The reversal of 56438537 is 73583465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44769481 + 11669056 = 6691^2 + 3416^2 .

It is a cyclic number.

It is not a de Polignac number, because 56438537 - 2⁸ = 56438281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56438494 and 56438503.

It is not a weakly prime, because it can be changed into another prime (56438567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28219268 + 28219269.

It is an arithmetic number, because the mean of its divisors is an integer number (28219269).

Almost surely, 2^56438537 is an apocalyptic number.

It is an amenable number.

56438537 is a deficient number, since it is larger than the sum of its proper divisors (1).

56438537 is an equidigital number, since it uses as much as digits as its factorization.

56438537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 56438537 is about 7512.5586187397. The cubic root of 56438537 is about 383.5823208272.

The spelling of 56438537 in words is "fifty-six million, four hundred thirty-eight thousand, five hundred thirty-seven".