51515676 has 120 divisors (see below), whose sum is σ = 145711104. Its totient is φ = 15824160.

The previous prime is 51515671. The next prime is 51515719. The reversal of 51515676 is 67651515.

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 51515676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51515671) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 230901 + ... + 231123.

Almost surely, 2^51515676 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 51515676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72855552).

51515676 is an abundant number, since it is smaller than the sum of its proper divisors (94195428).

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

51515676 is a wasteful number, since it uses less digits than its factorization.

51515676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 282 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 51515676 is about 7177.4421627764. The cubic root of 51515676 is about 372.0886885315.

The spelling of 51515676 in words is "fifty-one million, five hundred fifteen thousand, six hundred seventy-six".