51559974 has 24 divisors (see below), whose sum is σ = 116571312. Its totient is φ = 16439280.

The previous prime is 51559961. The next prime is 51560009. The reversal of 51559974 is 47995515.

51559974 is a `hidden beast` number, since 5 + 1 + 559 + 97 + 4 = 666.

51559974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61857 + ... + 62684.

It is an arithmetic number, because the mean of its divisors is an integer number (4857138).

Almost surely, 2^51559974 is an apocalyptic number.

51559974 is an abundant number, since it is smaller than the sum of its proper divisors (65011338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51559974 is a wasteful number, since it uses less digits than its factorization.

51559974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124572 (or 124569 counting only the distinct ones).

The product of its digits is 283500, while the sum is 45.

The square root of 51559974 is about 7180.5274179548. The cubic root of 51559974 is about 372.1953102033.

It can be divided in two parts, 5155 and 9974, that added together give a square (15129 = 123²).

The spelling of 51559974 in words is "fifty-one million, five hundred fifty-nine thousand, nine hundred seventy-four".