51059140 has 96 divisors (see below), whose sum is σ = 124104960. Its totient is φ = 17472000.

The previous prime is 51059123. The next prime is 51059147. The reversal of 51059140 is 4195015.

It is not an unprimeable number, because it can be changed into a prime (51059147) 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 31 ways as a sum of consecutive naturals, for example, 338065 + ... + 338215.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^51059140 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 51059140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62052480).

51059140 is an abundant number, since it is smaller than the sum of its proper divisors (73045820).

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

51059140 is a wasteful number, since it uses less digits than its factorization.

51059140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 51059140 is about 7145.5678570706. The cubic root of 51059140 is about 370.9862656962.

The spelling of 51059140 in words is "fifty-one million, fifty-nine thousand, one hundred forty".