56641947 has 8 divisors (see below), whose sum is σ = 76802880. Its totient is φ = 37121160.

The previous prime is 56641933. The next prime is 56641957. The reversal of 56641947 is 74914665.

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

It is not a de Polignac number, because 56641947 - 2²⁰ = 55593371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56641899 and 56641908.

It is not an unprimeable number, because it can be changed into a prime (56641927) 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, 159829 + ... + 160182.

It is an arithmetic number, because the mean of its divisors is an integer number (9600360).

Almost surely, 2^56641947 is an apocalyptic number.

56641947 is a deficient number, since it is larger than the sum of its proper divisors (20160933).

56641947 is a wasteful number, since it uses less digits than its factorization.

56641947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320073.

The product of its digits is 181440, while the sum is 42.

The square root of 56641947 is about 7526.0844401322. The cubic root of 56641947 is about 384.0425910333.

The spelling of 56641947 in words is "fifty-six million, six hundred forty-one thousand, nine hundred forty-seven".