56621650 has 24 divisors (see below), whose sum is σ = 106086960. Its totient is φ = 22482960.

The previous prime is 56621641. The next prime is 56621657. The reversal of 56621650 is 5612665.

It is a super-2 number, since 2×56621650² = 6412022497445000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56621657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2877 + ... + 11023.

It is an arithmetic number, because the mean of its divisors is an integer number (4420290).

Almost surely, 2^56621650 is an apocalyptic number.

56621650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56621650 is a deficient number, since it is larger than the sum of its proper divisors (49465310).

56621650 is a wasteful number, since it uses less digits than its factorization.

56621650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8298 (or 8293 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 56621650 is about 7524.7358757633. The cubic root of 56621650 is about 383.9967131157.

The spelling of 56621650 in words is "fifty-six million, six hundred twenty-one thousand, six hundred fifty".