56351903 has 8 divisors (see below), whose sum is σ = 57436800. Its totient is φ = 55271448.

The previous prime is 56351873. The next prime is 56351921. The reversal of 56351903 is 30915365.

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 56351903 - 2¹² = 56347807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56351903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56351803) 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, 35750 + ... + 37292.

It is an arithmetic number, because the mean of its divisors is an integer number (7179600).

Almost surely, 2^56351903 is an apocalyptic number.

56351903 is a deficient number, since it is larger than the sum of its proper divisors (1084897).

56351903 is a wasteful number, since it uses less digits than its factorization.

56351903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 56351903 is about 7506.7904593108. The cubic root of 56351903 is about 383.3859521132.

The spelling of 56351903 in words is "fifty-six million, three hundred fifty-one thousand, nine hundred three".