56404461 has 4 divisors (see below), whose sum is σ = 75205952. Its totient is φ = 37602972.

The previous prime is 56404457. The next prime is 56404463. The reversal of 56404461 is 16440465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56404461 - 2² = 56404457 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 (56404463) 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, 9400741 + ... + 9400746.

It is an arithmetic number, because the mean of its divisors is an integer number (18801488).

Almost surely, 2^56404461 is an apocalyptic number.

It is an amenable number.

56404461 is a deficient number, since it is larger than the sum of its proper divisors (18801491).

56404461 is a wasteful number, since it uses less digits than its factorization.

56404461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18801490.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 56404461 is about 7510.2903405927. The cubic root of 56404461 is about 383.5051065491.

It can be divided in two parts, 56404 and 461, that added together give a palindrome (56865).

The spelling of 56404461 in words is "fifty-six million, four hundred four thousand, four hundred sixty-one".