51177140 has 48 divisors (see below), whose sum is σ = 130056192. Its totient is φ = 16513536.

The previous prime is 51177107. The next prime is 51177151. The reversal of 51177140 is 4177115.

51177140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8372 + ... + 13131.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^51177140 is an apocalyptic number.

It is an amenable number.

51177140 is an abundant number, since it is smaller than the sum of its proper divisors (78879052).

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

51177140 is a wasteful number, since it uses less digits than its factorization.

51177140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21536 (or 21534 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 51177140 is about 7153.8199585955. The cubic root of 51177140 is about 371.2718345451.

The spelling of 51177140 in words is "fifty-one million, one hundred seventy-seven thousand, one hundred forty".