56404005 has 16 divisors (see below), whose sum is σ = 103138944. Its totient is φ = 25784640.

The previous prime is 56404001. The next prime is 56404009. The reversal of 56404005 is 50040465.

It is an interprime number because it is at equal distance from previous prime (56404001) and next prime (56404009).

It is not a de Polignac number, because 56404005 - 2² = 56404001 is a prime.

It is a super-3 number, since 3×56404005³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56404001) 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, 268486 + ... + 268695.

It is an arithmetic number, because the mean of its divisors is an integer number (6446184).

Almost surely, 2^56404005 is an apocalyptic number.

It is an amenable number.

56404005 is a deficient number, since it is larger than the sum of its proper divisors (46734939).

56404005 is a wasteful number, since it uses less digits than its factorization.

56404005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537196.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 56404005 is about 7510.2599821844. The cubic root of 56404005 is about 383.5040730682.

The spelling of 56404005 in words is "fifty-six million, four hundred four thousand, five".