56641530 has 32 divisors (see below), whose sum is σ = 148298688. Its totient is φ = 13731200.

The previous prime is 56641517. The next prime is 56641531. The reversal of 56641530 is 3514665.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (56641531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85491 + ... + 86150.

It is an arithmetic number, because the mean of its divisors is an integer number (4634334).

Almost surely, 2^56641530 is an apocalyptic number.

56641530 is an abundant number, since it is smaller than the sum of its proper divisors (91657158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56641530 is a wasteful number, since it uses less digits than its factorization.

56641530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171662.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 56641530 is about 7526.0567364324. The cubic root of 56641530 is about 384.0416485859.

The spelling of 56641530 in words is "fifty-six million, six hundred forty-one thousand, five hundred thirty".