56461021 has 8 divisors (see below), whose sum is σ = 60287040. Its totient is φ = 52749312.

The previous prime is 56461003. The next prime is 56461037. The reversal of 56461021 is 12016465.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56461021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56461091) 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, 27556 + ... + 29533.

It is an arithmetic number, because the mean of its divisors is an integer number (7535880).

Almost surely, 2^56461021 is an apocalyptic number.

It is an amenable number.

56461021 is a deficient number, since it is larger than the sum of its proper divisors (3826019).

56461021 is a wasteful number, since it uses less digits than its factorization.

56461021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57155.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 56461021 is about 7514.0548973241. The cubic root of 56461021 is about 383.6332512750.

Adding to 56461021 its reverse (12016465), we get a palindrome (68477486).

The spelling of 56461021 in words is "fifty-six million, four hundred sixty-one thousand, twenty-one".