51401700 has 216 divisors, whose sum is σ = 189571200. Its totient is φ = 11404800.

The previous prime is 51401699. The next prime is 51401737. The reversal of 51401700 is 710415.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 258201 + ... + 258399.

Almost surely, 2^51401700 is an apocalyptic number.

51401700 is a gapful number since it is divisible by the number (50) 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 51401700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94785600).

51401700 is an abundant number, since it is smaller than the sum of its proper divisors (138169500).

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

51401700 is a wasteful number, since it uses less digits than its factorization.

51401700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 51401700 is about 7169.4978903686. The cubic root of 51401700 is about 371.8140763599.

The spelling of 51401700 in words is "fifty-one million, four hundred one thousand, seven hundred".