51508822 has 16 divisors (see below), whose sum is σ = 81370080. Its totient is φ = 24406272.

The previous prime is 51508819. The next prime is 51508823. The reversal of 51508822 is 22880515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51508823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123 + ... + 10150.

It is an arithmetic number, because the mean of its divisors is an integer number (5085630).

Almost surely, 2^51508822 is an apocalyptic number.

51508822 is a deficient number, since it is larger than the sum of its proper divisors (29861258).

51508822 is a wasteful number, since it uses less digits than its factorization.

51508822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 51508822 is about 7176.9646787483. The cubic root of 51508822 is about 372.0721860532.

The spelling of 51508822 in words is "fifty-one million, five hundred eight thousand, eight hundred twenty-two".