51154688 has 72 divisors (see below), whose sum is σ = 115894800. Its totient is φ = 22339584.

The previous prime is 51154687. The next prime is 51154703. The reversal of 51154688 is 88645115.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51154687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62828 + ... + 63636.

It is an arithmetic number, because the mean of its divisors is an integer number (1609650).

Almost surely, 2^51154688 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 51154688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57947400).

51154688 is an abundant number, since it is smaller than the sum of its proper divisors (64740112).

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

51154688 is a wasteful number, since it uses less digits than its factorization.

51154688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 843 counting only the distinct ones).

The product of its digits is 38400, while the sum is 38.

The square root of 51154688 is about 7152.2505548953. The cubic root of 51154688 is about 371.2175328619.

The spelling of 51154688 in words is "fifty-one million, one hundred fifty-four thousand, six hundred eighty-eight".