51169364 has 12 divisors (see below), whose sum is σ = 89596500. Its totient is φ = 25570368.

The previous prime is 51169309. The next prime is 51169367. The reversal of 51169364 is 46396115.

It can be written as a sum of positive squares in 2 ways, for example, as 4656964 + 46512400 = 2158^2 + 6820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51169367) 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, 11942 + ... + 15650.

It is an arithmetic number, because the mean of its divisors is an integer number (7466375).

Almost surely, 2^51169364 is an apocalyptic number.

It is an amenable number.

51169364 is a deficient number, since it is larger than the sum of its proper divisors (38427136).

51169364 is a wasteful number, since it uses less digits than its factorization.

51169364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162 (or 7160 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 51169364 is about 7153.2764520882. The cubic root of 51169364 is about 371.2530295603.

The spelling of 51169364 in words is "fifty-one million, one hundred sixty-nine thousand, three hundred sixty-four".