51812376 has 192 divisors, whose sum is σ = 172005120. Its totient is φ = 12629760.

The previous prime is 51812351. The next prime is 51812381. The reversal of 51812376 is 67321815.

It is a Harshad number since it is a multiple of its sum of digits (33).

Its product of digits (10080) is a multiple of the sum of its prime factors (126).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 977566 + ... + 977618.

It is an arithmetic number, because the mean of its divisors is an integer number (895860).

Almost surely, 2^51812376 is an apocalyptic number.

51812376 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51812376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86002560).

51812376 is an abundant number, since it is smaller than the sum of its proper divisors (120192744).

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

51812376 is a wasteful number, since it uses less digits than its factorization.

51812376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 99 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 51812376 is about 7198.0814110428. The cubic root of 51812376 is about 372.8016588615.

It can be divided in two parts, 5181 and 2376, that added together give a palindrome (7557).

The spelling of 51812376 in words is "fifty-one million, eight hundred twelve thousand, three hundred seventy-six".