56461643 has 8 divisors (see below), whose sum is σ = 65621760. Its totient is φ = 47575080.

The previous prime is 56461609. The next prime is 56461651. The reversal of 56461643 is 34616465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56461643 - 2¹⁸ = 56199499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56461043) 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, 67943 + ... + 68768.

It is an arithmetic number, because the mean of its divisors is an integer number (8202720).

Almost surely, 2^56461643 is an apocalyptic number.

56461643 is a deficient number, since it is larger than the sum of its proper divisors (9160117).

56461643 is a wasteful number, since it uses less digits than its factorization.

56461643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136777.

The product of its digits is 51840, while the sum is 35.

The square root of 56461643 is about 7514.0962863141. The cubic root of 56461643 is about 383.6346600286.

The spelling of 56461643 in words is "fifty-six million, four hundred sixty-one thousand, six hundred forty-three".