56849521 has 2 divisors, whose sum is σ = 56849522. Its totient is φ = 56849520.

The previous prime is 56849489. The next prime is 56849557. The reversal of 56849521 is 12594865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51279921 + 5569600 = 7161^2 + 2360^2 .

It is a cyclic number.

It is not a de Polignac number, because 56849521 - 2⁵ = 56849489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56849321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28424760 + 28424761.

It is an arithmetic number, because the mean of its divisors is an integer number (28424761).

Almost surely, 2^56849521 is an apocalyptic number.

It is an amenable number.

56849521 is a deficient number, since it is larger than the sum of its proper divisors (1).

56849521 is an equidigital number, since it uses as much as digits as its factorization.

56849521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 56849521 is about 7539.8621340181. The cubic root of 56849521 is about 384.5111488169.

It can be divided in two parts, 568495 and 21, that added together give a square (568516 = 754²).

The spelling of 56849521 in words is "fifty-six million, eight hundred forty-nine thousand, five hundred twenty-one".