51450364 has 24 divisors (see below), whose sum is σ = 108954720. Its totient is φ = 20752896.

The previous prime is 51450353. The next prime is 51450391. The reversal of 51450364 is 46305415.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53569 + ... + 54520.

It is an arithmetic number, because the mean of its divisors is an integer number (4539780).

Almost surely, 2^51450364 is an apocalyptic number.

It is an amenable number.

51450364 is an abundant number, since it is smaller than the sum of its proper divisors (57504356).

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

51450364 is a wasteful number, since it uses less digits than its factorization.

51450364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108117 (or 108115 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 51450364 is about 7172.8909095287. The cubic root of 51450364 is about 371.9313763269.

Adding to 51450364 its reverse (46305415), we get a palindrome (97755779).

The spelling of 51450364 in words is "fifty-one million, four hundred fifty thousand, three hundred sixty-four".