56397437 has 2 divisors, whose sum is σ = 56397438. Its totient is φ = 56397436.

The previous prime is 56397413. The next prime is 56397461. The reversal of 56397437 is 73479365.

It is a balanced prime because it is at equal distance from previous prime (56397413) and next prime (56397461).

It can be written as a sum of positive squares in only one way, i.e., 46594276 + 9803161 = 6826^2 + 3131^2 .

It is a cyclic number.

It is not a de Polignac number, because 56397437 - 2¹⁰ = 56396413 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 (56397487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28198718 + 28198719.

It is an arithmetic number, because the mean of its divisors is an integer number (28198719).

Almost surely, 2^56397437 is an apocalyptic number.

It is an amenable number.

56397437 is a deficient number, since it is larger than the sum of its proper divisors (1).

56397437 is an equidigital number, since it uses as much as digits as its factorization.

56397437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 44.

The square root of 56397437 is about 7509.8227009697. The cubic root of 56397437 is about 383.4891866990.

The spelling of 56397437 in words is "fifty-six million, three hundred ninety-seven thousand, four hundred thirty-seven".