56751330 has 16 divisors (see below), whose sum is σ = 136203264. Its totient is φ = 15133680.

The previous prime is 56751329. The next prime is 56751353. The reversal of 56751330 is 3315765.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1891711 = 56751330 / (5 + 6 + 7 + 5 + 1 + 3 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945826 + ... + 945885.

It is an arithmetic number, because the mean of its divisors is an integer number (8512704).

Almost surely, 2^56751330 is an apocalyptic number.

56751330 is an abundant number, since it is smaller than the sum of its proper divisors (79451934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56751330 is a wasteful number, since it uses less digits than its factorization.

56751330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891721.

The product of its (nonzero) digits is 9450, while the sum is 30.

The square root of 56751330 is about 7533.3478613429. The cubic root of 56751330 is about 384.2896442104.

The spelling of 56751330 in words is "fifty-six million, seven hundred fifty-one thousand, three hundred thirty".