51498864 has 60 divisors (see below), whose sum is σ = 147494776. Its totient is φ = 16765056.

The previous prime is 51498841. The next prime is 51498877. The reversal of 51498864 is 46889415.

51498864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2034 + ... + 10350.

Almost surely, 2^51498864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51498864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73747388).

51498864 is an abundant number, since it is smaller than the sum of its proper divisors (95995912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51498864 is a wasteful number, since it uses less digits than its factorization.

51498864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374 (or 8365 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 51498864 is about 7176.2708978968. The cubic root of 51498864 is about 372.0482074189.

The spelling of 51498864 in words is "fifty-one million, four hundred ninety-eight thousand, eight hundred sixty-four".