56724403 has 2 divisors, whose sum is σ = 56724404. Its totient is φ = 56724402.

The previous prime is 56724401. The next prime is 56724407. The reversal of 56724403 is 30442765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56724403 - 2¹ = 56724401 is a prime.

Together with 56724401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56724401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28362201 + 28362202.

It is an arithmetic number, because the mean of its divisors is an integer number (28362202).

Almost surely, 2^56724403 is an apocalyptic number.

56724403 is a deficient number, since it is larger than the sum of its proper divisors (1).

56724403 is an equidigital number, since it uses as much as digits as its factorization.

56724403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 56724403 is about 7531.5604624805. The cubic root of 56724403 is about 384.2288561827.

The spelling of 56724403 in words is "fifty-six million, seven hundred twenty-four thousand, four hundred three".