51334380 has 36 divisors (see below), whose sum is σ = 155714832. Its totient is φ = 13689120.

The previous prime is 51334351. The next prime is 51334417. The reversal of 51334380 is 8343315.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142416 + ... + 142775.

It is an arithmetic number, because the mean of its divisors is an integer number (4325412).

Almost surely, 2^51334380 is an apocalyptic number.

It is an amenable number.

51334380 is an abundant number, since it is smaller than the sum of its proper divisors (104380452).

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

51334380 is a wasteful number, since it uses less digits than its factorization.

51334380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285206 (or 285201 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 51334380 is about 7164.8014627064. The cubic root of 51334380 is about 371.6516857585.

Adding to 51334380 its reverse (8343315), we get a palindrome (59677695).

The spelling of 51334380 in words is "fifty-one million, three hundred thirty-four thousand, three hundred eighty".