51148656 has 120 divisors (see below), whose sum is σ = 156396240. Its totient is φ = 15510528.

The previous prime is 51148649. The next prime is 51148679. The reversal of 51148656 is 65684115.

51148656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 51148656.

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 23 ways as a sum of consecutive naturals, for example, 166455 + ... + 166761.

It is an arithmetic number, because the mean of its divisors is an integer number (1303302).

Almost surely, 2^51148656 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 51148656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78198120).

51148656 is an abundant number, since it is smaller than the sum of its proper divisors (105247584).

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

51148656 is a wasteful number, since it uses less digits than its factorization.

51148656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 414 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 51148656 is about 7151.8288570127. The cubic root of 51148656 is about 371.2029413535.

The spelling of 51148656 in words is "fifty-one million, one hundred forty-eight thousand, six hundred fifty-six".