56408237 has 2 divisors, whose sum is σ = 56408238. Its totient is φ = 56408236.

The previous prime is 56408203. The next prime is 56408249. The reversal of 56408237 is 73280465.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31147561 + 25260676 = 5581^2 + 5026^2 .

It is a cyclic number.

It is not a de Polignac number, because 56408237 - 2¹⁰ = 56407213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56408197 and 56408206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56408257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28204118 + 28204119.

It is an arithmetic number, because the mean of its divisors is an integer number (28204119).

Almost surely, 2^56408237 is an apocalyptic number.

It is an amenable number.

56408237 is a deficient number, since it is larger than the sum of its proper divisors (1).

56408237 is an equidigital number, since it uses as much as digits as its factorization.

56408237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 56408237 is about 7510.5417248025. The cubic root of 56408237 is about 383.5136642822.

The spelling of 56408237 in words is "fifty-six million, four hundred eight thousand, two hundred thirty-seven".