51320566 has 16 divisors (see below), whose sum is σ = 84848400. Its totient is φ = 23086080.

The previous prime is 51320527. The next prime is 51320597. The reversal of 51320566 is 66502315.

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, 9891 + ... + 14158.

It is an arithmetic number, because the mean of its divisors is an integer number (5303025).

Almost surely, 2^51320566 is an apocalyptic number.

51320566 is a deficient number, since it is larger than the sum of its proper divisors (33527834).

51320566 is a wasteful number, since it uses less digits than its factorization.

51320566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24159.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 51320566 is about 7163.8373795055. The cubic root of 51320566 is about 371.6183458086.

The spelling of 51320566 in words is "fifty-one million, three hundred twenty thousand, five hundred sixty-six".