56804906 has 4 divisors (see below), whose sum is σ = 85207362. Its totient is φ = 28402452.

The previous prime is 56804903. The next prime is 56804921. The reversal of 56804906 is 60940865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60940865 = 5 ⋅12188173.

It can be written as a sum of positive squares in only one way, i.e., 40844881 + 15960025 = 6391^2 + 3995^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56804906.

It is not an unprimeable number, because it can be changed into a prime (56804903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14201225 + ... + 14201228.

Almost surely, 2^56804906 is an apocalyptic number.

56804906 is a deficient number, since it is larger than the sum of its proper divisors (28402456).

56804906 is a wasteful number, since it uses less digits than its factorization.

56804906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28402455.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 56804906 is about 7536.9029448441. The cubic root of 56804906 is about 384.4105355121.

The spelling of 56804906 in words is "fifty-six million, eight hundred four thousand, nine hundred six".