56641407 has 4 divisors (see below), whose sum is σ = 75521880. Its totient is φ = 37760936.

The previous prime is 56641397. The next prime is 56641427. The reversal of 56641407 is 70414665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56641407 - 2¹⁰ = 56640383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56641427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9440232 + ... + 9440237.

It is an arithmetic number, because the mean of its divisors is an integer number (18880470).

Almost surely, 2^56641407 is an apocalyptic number.

56641407 is a deficient number, since it is larger than the sum of its proper divisors (18880473).

56641407 is a wasteful number, since it uses less digits than its factorization.

56641407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18880472.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 56641407 is about 7526.0485648181. The cubic root of 56641407 is about 384.0413705970.

The spelling of 56641407 in words is "fifty-six million, six hundred forty-one thousand, four hundred seven".