56624429 has 8 divisors (see below), whose sum is σ = 57639288. Its totient is φ = 55618560.

The previous prime is 56624423. The next prime is 56624441. The reversal of 56624429 is 92442665.

It can be written as a sum of positive squares in 4 ways, for example, as 24157225 + 32467204 = 4915^2 + 5698^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56624429 - 2⁸ = 56624173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56624392 and 56624401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56624423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11159 + ... + 15419.

It is an arithmetic number, because the mean of its divisors is an integer number (7204911).

Almost surely, 2^56624429 is an apocalyptic number.

It is an amenable number.

56624429 is a deficient number, since it is larger than the sum of its proper divisors (1014859).

56624429 is a wasteful number, since it uses less digits than its factorization.

56624429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495.

The product of its digits is 103680, while the sum is 38.

The square root of 56624429 is about 7524.9205311418. The cubic root of 56624429 is about 384.0029952204.

The spelling of 56624429 in words is "fifty-six million, six hundred twenty-four thousand, four hundred twenty-nine".