56400733 has 2 divisors, whose sum is σ = 56400734. Its totient is φ = 56400732.

The previous prime is 56400731. The next prime is 56400787. The reversal of 56400733 is 33700465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55920484 + 480249 = 7478^2 + 693^2 .

It is a cyclic number.

It is not a de Polignac number, because 56400733 - 2¹ = 56400731 is a prime.

Together with 56400731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56400731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28200366 + 28200367.

It is an arithmetic number, because the mean of its divisors is an integer number (28200367).

Almost surely, 2^56400733 is an apocalyptic number.

It is an amenable number.

56400733 is a deficient number, since it is larger than the sum of its proper divisors (1).

56400733 is an equidigital number, since it uses as much as digits as its factorization.

56400733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 56400733 is about 7510.0421436900. The cubic root of 56400733 is about 383.4966572261.

The spelling of 56400733 in words is "fifty-six million, four hundred thousand, seven hundred thirty-three".