56537549 has 2 divisors, whose sum is σ = 56537550. Its totient is φ = 56537548.

The previous prime is 56537531. The next prime is 56537599. The reversal of 56537549 is 94573565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50197225 + 6340324 = 7085^2 + 2518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56537549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56537599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28268774 + 28268775.

It is an arithmetic number, because the mean of its divisors is an integer number (28268775).

Almost surely, 2^56537549 is an apocalyptic number.

It is an amenable number.

56537549 is a deficient number, since it is larger than the sum of its proper divisors (1).

56537549 is an equidigital number, since it uses as much as digits as its factorization.

56537549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 44.

The square root of 56537549 is about 7519.1454966638. The cubic root of 56537549 is about 383.8065001850.

The spelling of 56537549 in words is "fifty-six million, five hundred thirty-seven thousand, five hundred forty-nine".