56726437 has 2 divisors, whose sum is σ = 56726438. Its totient is φ = 56726436.

The previous prime is 56726429. The next prime is 56726477. The reversal of 56726437 is 73462765.

56726437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (56726477) can be obtained adding 56726437 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42954916 + 13771521 = 6554^2 + 3711^2 .

It is a cyclic number.

It is not a de Polignac number, because 56726437 - 2³ = 56726429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56726437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56726477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28363218 + 28363219.

It is an arithmetic number, because the mean of its divisors is an integer number (28363219).

Almost surely, 2^56726437 is an apocalyptic number.

It is an amenable number.

56726437 is a deficient number, since it is larger than the sum of its proper divisors (1).

56726437 is an equidigital number, since it uses as much as digits as its factorization.

56726437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 40.

The square root of 56726437 is about 7531.6954930480. The cubic root of 56726437 is about 384.2334486339.

The spelling of 56726437 in words is "fifty-six million, seven hundred twenty-six thousand, four hundred thirty-seven".