56631541 has 2 divisors, whose sum is σ = 56631542. Its totient is φ = 56631540.

The previous prime is 56631521. The next prime is 56631551. The reversal of 56631541 is 14513665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56100100 + 531441 = 7490^2 + 729^2 .

It is a cyclic number.

It is not a de Polignac number, because 56631541 - 2¹³ = 56623349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56631511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28315770 + 28315771.

It is an arithmetic number, because the mean of its divisors is an integer number (28315771).

Almost surely, 2^56631541 is an apocalyptic number.

It is an amenable number.

56631541 is a deficient number, since it is larger than the sum of its proper divisors (1).

56631541 is an equidigital number, since it uses as much as digits as its factorization.

56631541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 56631541 is about 7525.3930794345. The cubic root of 56631541 is about 384.0190714088.

The spelling of 56631541 in words is "fifty-six million, six hundred thirty-one thousand, five hundred forty-one".