51377316 has 12 divisors (see below), whose sum is σ = 119880432. Its totient is φ = 17125768.

The previous prime is 51377269. The next prime is 51377317. The reversal of 51377316 is 61377315.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51377317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140710 + ... + 2140733.

It is an arithmetic number, because the mean of its divisors is an integer number (9990036).

Almost surely, 2^51377316 is an apocalyptic number.

It is an amenable number.

51377316 is an abundant number, since it is smaller than the sum of its proper divisors (68503116).

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

51377316 is a wasteful number, since it uses less digits than its factorization.

51377316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281450 (or 4281448 counting only the distinct ones).

The product of its digits is 13230, while the sum is 33.

The square root of 51377316 is about 7167.7971511476. The cubic root of 51377316 is about 371.7552731917.

Subtracting 51377316 from its reverse (61377315), we obtain a palindrome (9999999).

The spelling of 51377316 in words is "fifty-one million, three hundred seventy-seven thousand, three hundred sixteen".