51002880 has 160 divisors (see below), whose sum is σ = 169408800. Its totient is φ = 13074432.

The previous prime is 51002869. The next prime is 51002899. The reversal of 51002880 is 8820015.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51002880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222606 + ... + 222834.

It is an arithmetic number, because the mean of its divisors is an integer number (1058805).

Almost surely, 2^51002880 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 51002880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84704400).

51002880 is an abundant number, since it is smaller than the sum of its proper divisors (118405920).

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

51002880 is a wasteful number, since it uses less digits than its factorization.

51002880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 51002880 is about 7141.6300660283. The cubic root of 51002880 is about 370.8499573689.

Adding to 51002880 its reverse (8820015), we get a palindrome (59822895).

The spelling of 51002880 in words is "fifty-one million, two thousand, eight hundred eighty".