56646461 has 4 divisors (see below), whose sum is σ = 58028124. Its totient is φ = 55264800.

The previous prime is 56646451. The next prime is 56646479. The reversal of 56646461 is 16464665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16564900 + 40081561 = 4070^2 + 6331^2 .

It is a cyclic number.

It is not a de Polignac number, because 56646461 - 2¹⁰ = 56645437 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 (56646451) 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, 690770 + ... + 690851.

It is an arithmetic number, because the mean of its divisors is an integer number (14507031).

Almost surely, 2^56646461 is an apocalyptic number.

It is an amenable number.

56646461 is a deficient number, since it is larger than the sum of its proper divisors (1381663).

56646461 is a wasteful number, since it uses less digits than its factorization.

56646461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381662.

The product of its digits is 103680, while the sum is 38.

The square root of 56646461 is about 7526.3843244947. The cubic root of 56646461 is about 384.0527926730.

It can be divided in two parts, 5 and 6646461, that added together give a palindrome (6646466).

The spelling of 56646461 in words is "fifty-six million, six hundred forty-six thousand, four hundred sixty-one".