51561302 has 16 divisors (see below), whose sum is σ = 83507760. Its totient is φ = 23735712.

The previous prime is 51561281. The next prime is 51561311. The reversal of 51561302 is 20316515.

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, 8528 + ... + 13260.

It is an arithmetic number, because the mean of its divisors is an integer number (5219235).

Almost surely, 2^51561302 is an apocalyptic number.

51561302 is a deficient number, since it is larger than the sum of its proper divisors (31946458).

51561302 is a wasteful number, since it uses less digits than its factorization.

51561302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5167.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51561302 is about 7180.6198896753. The cubic root of 51561302 is about 372.1985056480.

Adding to 51561302 its reverse (20316515), we get a palindrome (71877817).

The spelling of 51561302 in words is "fifty-one million, five hundred sixty-one thousand, three hundred two".