56909903 has 8 divisors (see below), whose sum is σ = 58242240. Its totient is φ = 55582720.

The previous prime is 56909899. The next prime is 56909917. The reversal of 56909903 is 30990965.

It is a happy number.

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 56909903 - 2² = 56909899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56909933) 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, 29183 + ... + 31071.

It is an arithmetic number, because the mean of its divisors is an integer number (7280280).

Almost surely, 2^56909903 is an apocalyptic number.

56909903 is a deficient number, since it is larger than the sum of its proper divisors (1332337).

56909903 is a wasteful number, since it uses less digits than its factorization.

56909903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 56909903 is about 7543.8652559547. The cubic root of 56909903 is about 384.6472351993.

The spelling of 56909903 in words is "fifty-six million, nine hundred nine thousand, nine hundred three".