56641641 has 16 divisors (see below), whose sum is σ = 90854400. Its totient is φ = 30662928.

The previous prime is 56641639. The next prime is 56641643. The reversal of 56641641 is 14614665.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56641639) and next prime (56641643).

It is not a de Polignac number, because 56641641 - 2¹ = 56641639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56641643) 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, 70581 + ... + 71378.

It is an arithmetic number, because the mean of its divisors is an integer number (5678400).

Almost surely, 2^56641641 is an apocalyptic number.

It is an amenable number.

56641641 is a deficient number, since it is larger than the sum of its proper divisors (34212759).

56641641 is a wasteful number, since it uses less digits than its factorization.

56641641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141988.

The product of its digits is 17280, while the sum is 33.

The square root of 56641641 is about 7526.0641108085. The cubic root of 56641641 is about 384.0418994537.

The spelling of 56641641 in words is "fifty-six million, six hundred forty-one thousand, six hundred forty-one".