56611405 has 8 divisors (see below), whose sum is σ = 67984632. Its totient is φ = 45255168.

The previous prime is 56611397. The next prime is 56611421. The reversal of 56611405 is 50411665.

It can be written as a sum of positive squares in 4 ways, for example, as 15876 + 56595529 = 126^2 + 7523^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56611405 - 2³ = 56611397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4869 + ... + 11701.

It is an arithmetic number, because the mean of its divisors is an integer number (8498079).

Almost surely, 2^56611405 is an apocalyptic number.

It is an amenable number.

56611405 is a deficient number, since it is larger than the sum of its proper divisors (11373227).

56611405 is a wasteful number, since it uses less digits than its factorization.

56611405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8495.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 56611405 is about 7524.0550901758. The cubic root of 56611405 is about 383.9735518713.

The spelling of 56611405 in words is "fifty-six million, six hundred eleven thousand, four hundred five".