51361364 has 12 divisors (see below), whose sum is σ = 90045984. Its totient is φ = 25633944.

The previous prime is 51361363. The next prime is 51361367. The reversal of 51361364 is 46316315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51361363) 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, 9152 + ... + 13655.

It is an arithmetic number, because the mean of its divisors is an integer number (7503832).

Almost surely, 2^51361364 is an apocalyptic number.

It is an amenable number.

51361364 is a deficient number, since it is larger than the sum of its proper divisors (38684620).

51361364 is a wasteful number, since it uses less digits than its factorization.

51361364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23374 (or 23372 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 51361364 is about 7166.6843100558. The cubic root of 51361364 is about 371.7167941219.

Adding to 51361364 its reverse (46316315), we get a palindrome (97677679).

The spelling of 51361364 in words is "fifty-one million, three hundred sixty-one thousand, three hundred sixty-four".