56393397 has 6 divisors (see below), whose sum is σ = 81457142. Its totient is φ = 37595592.

The previous prime is 56393377. The next prime is 56393443. The reversal of 56393397 is 79339365.

56393397 is a `hidden beast` number, since 5 + 639 + 3 + 3 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56340036 + 53361 = 7506^2 + 231^2 .

It is not a de Polignac number, because 56393397 - 2⁷ = 56393269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56393317) 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 in 5 ways as a sum of consecutive naturals, for example, 3132958 + ... + 3132975.

Almost surely, 2^56393397 is an apocalyptic number.

It is an amenable number.

56393397 is a deficient number, since it is larger than the sum of its proper divisors (25063745).

56393397 is a wasteful number, since it uses less digits than its factorization.

56393397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6265939 (or 6265936 counting only the distinct ones).

The product of its digits is 459270, while the sum is 45.

The square root of 56393397 is about 7509.5537151019. The cubic root of 56393397 is about 383.4800294666.

The spelling of 56393397 in words is "fifty-six million, three hundred ninety-three thousand, three hundred ninety-seven".