56218963 has 8 divisors (see below), whose sum is σ = 57516032. Its totient is φ = 54935496.

The previous prime is 56218957. The next prime is 56218991. The reversal of 56218963 is 36981265.

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 56218963 - 2¹⁷ = 56087891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56218993) 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, 5206 + ... + 11812.

It is an arithmetic number, because the mean of its divisors is an integer number (7189504).

Almost surely, 2^56218963 is an apocalyptic number.

56218963 is a deficient number, since it is larger than the sum of its proper divisors (1297069).

56218963 is a wasteful number, since it uses less digits than its factorization.

56218963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801.

The product of its digits is 77760, while the sum is 40.

The square root of 56218963 is about 7497.9305811670. The cubic root of 56218963 is about 383.0842322809.

The spelling of 56218963 in words is "fifty-six million, two hundred eighteen thousand, nine hundred sixty-three".