56604397 has 2 divisors, whose sum is σ = 56604398. Its totient is φ = 56604396.

The previous prime is 56604367. The next prime is 56604409. The reversal of 56604397 is 79340665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50424201 + 6180196 = 7101^2 + 2486^2 .

It is a cyclic number.

It is not a de Polignac number, because 56604397 - 2⁷ = 56604269 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 (56604367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28302198 + 28302199.

It is an arithmetic number, because the mean of its divisors is an integer number (28302199).

Almost surely, 2^56604397 is an apocalyptic number.

It is an amenable number.

56604397 is a deficient number, since it is larger than the sum of its proper divisors (1).

56604397 is an equidigital number, since it uses as much as digits as its factorization.

56604397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 56604397 is about 7523.5893694433. The cubic root of 56604397 is about 383.9577070211.

The spelling of 56604397 in words is "fifty-six million, six hundred four thousand, three hundred ninety-seven".