51451788 has 24 divisors (see below), whose sum is σ = 120259440. Its totient is φ = 17121280.

The previous prime is 51451781. The next prime is 51451811. The reversal of 51451788 is 88715415.

It is not an unprimeable number, because it can be changed into a prime (51451781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4348 + ... + 11036.

It is an arithmetic number, because the mean of its divisors is an integer number (5010810).

Almost surely, 2^51451788 is an apocalyptic number.

It is an amenable number.

51451788 is an abundant number, since it is smaller than the sum of its proper divisors (68807652).

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

51451788 is a wasteful number, since it uses less digits than its factorization.

51451788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337 (or 7335 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 51451788 is about 7172.9901714696. The cubic root of 51451788 is about 371.9348076300.

It can be divided in two parts, 514517 and 88, that added together give a triangular number (514605 = T₁₀₁₄).

The spelling of 51451788 in words is "fifty-one million, four hundred fifty-one thousand, seven hundred eighty-eight".