51565234 has 16 divisors (see below), whose sum is σ = 88492608. Its totient is φ = 22075632.

The previous prime is 51565211. The next prime is 51565243. The reversal of 51565234 is 43256515.

It is a junction number, because it is equal to n+sod(n) for n = 51565196 and 51565205.

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, 19669 + ... + 22135.

It is an arithmetic number, because the mean of its divisors is an integer number (5530788).

Almost surely, 2^51565234 is an apocalyptic number.

51565234 is a deficient number, since it is larger than the sum of its proper divisors (36927374).

51565234 is a wasteful number, since it uses less digits than its factorization.

51565234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969.

The product of its digits is 18000, while the sum is 31.

The square root of 51565234 is about 7180.8936769736. The cubic root of 51565234 is about 372.2079665374.

The spelling of 51565234 in words is "fifty-one million, five hundred sixty-five thousand, two hundred thirty-four".