51899716 has 24 divisors (see below), whose sum is σ = 104297760. Its totient is φ = 22348800.

The previous prime is 51899677. The next prime is 51899719. The reversal of 51899716 is 61799815.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51899719) 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, 30205 + ... + 31876.

It is an arithmetic number, because the mean of its divisors is an integer number (4345740).

Almost surely, 2^51899716 is an apocalyptic number.

It is an amenable number.

51899716 is an abundant number, since it is smaller than the sum of its proper divisors (52398044).

51899716 is a wasteful number, since it uses less digits than its factorization.

51899716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62115 (or 62113 counting only the distinct ones).

The product of its digits is 136080, while the sum is 46.

The square root of 51899716 is about 7204.1457508854. The cubic root of 51899716 is about 373.0110182257.

Subtracting 51899716 from its reverse (61799815), we obtain a palindrome (9900099).

The spelling of 51899716 in words is "fifty-one million, eight hundred ninety-nine thousand, seven hundred sixteen".