51377850 has 144 divisors (see below), whose sum is σ = 148561920. Its totient is φ = 12700800.

The previous prime is 51377827. The next prime is 51377857. The reversal of 51377850 is 5877315.

It is not an unprimeable number, because it can be changed into a prime (51377857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 404487 + ... + 404613.

It is an arithmetic number, because the mean of its divisors is an integer number (1031680).

Almost surely, 2^51377850 is an apocalyptic number.

51377850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51377850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74280960).

51377850 is an abundant number, since it is smaller than the sum of its proper divisors (97184070).

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

51377850 is a wasteful number, since it uses less digits than its factorization.

51377850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 51377850 is about 7167.8344009889. The cubic root of 51377850 is about 371.7565611571.

The spelling of 51377850 in words is "fifty-one million, three hundred seventy-seven thousand, eight hundred fifty".