56129501 has 2 divisors, whose sum is σ = 56129502. Its totient is φ = 56129500.

The previous prime is 56129483. The next prime is 56129509. The reversal of 56129501 is 10592165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54096025 + 2033476 = 7355^2 + 1426^2 .

It is a cyclic number.

It is not a de Polignac number, because 56129501 - 2¹⁴ = 56113117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56129509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28064750 + 28064751.

It is an arithmetic number, because the mean of its divisors is an integer number (28064751).

Almost surely, 2^56129501 is an apocalyptic number.

It is an amenable number.

56129501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56129501 is an equidigital number, since it uses as much as digits as its factorization.

56129501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 56129501 is about 7491.9624264941. The cubic root of 56129501 is about 382.8809220173.

The spelling of 56129501 in words is "fifty-six million, one hundred twenty-nine thousand, five hundred one".