56426218 has 4 divisors (see below), whose sum is σ = 84639330. Its totient is φ = 28213108.

The previous prime is 56426197. The next prime is 56426297. The reversal of 56426218 is 81262465.

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

It can be written as a sum of positive squares in only one way, i.e., 55308969 + 1117249 = 7437^2 + 1057^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14106553 + ... + 14106556.

Almost surely, 2^56426218 is an apocalyptic number.

56426218 is a deficient number, since it is larger than the sum of its proper divisors (28213112).

56426218 is a wasteful number, since it uses less digits than its factorization.

56426218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28213111.

The product of its digits is 23040, while the sum is 34.

The square root of 56426218 is about 7511.7386802258. The cubic root of 56426218 is about 383.5544102616.

It can be divided in two parts, 56426 and 218, that added together give a square (56644 = 238²).

The spelling of 56426218 in words is "fifty-six million, four hundred twenty-six thousand, two hundred eighteen".