51902496 has 72 divisors (see below), whose sum is σ = 156294684. Its totient is φ = 16281600.

The previous prime is 51902449. The next prime is 51902497. The reversal of 51902496 is 69420915.

It can be written as a sum of positive squares in 2 ways, for example, as 45968400 + 5934096 = 6780^2 + 2436^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51902496.

It is not an unprimeable number, because it can be changed into a prime (51902497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405 + ... + 10196.

Almost surely, 2^51902496 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 51902496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78147342).

51902496 is an abundant number, since it is smaller than the sum of its proper divisors (104392188).

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

51902496 is a wasteful number, since it uses less digits than its factorization.

51902496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10634 (or 10623 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 51902496 is about 7204.3386927601. The cubic root of 51902496 is about 373.0176781986.

The spelling of 51902496 in words is "fifty-one million, nine hundred two thousand, four hundred ninety-six".