51304134 has 16 divisors (see below), whose sum is σ = 117266688. Its totient is φ = 14658312.

The previous prime is 51304133. The next prime is 51304151. The reversal of 51304134 is 43140315.

It is a super-2 number, since 2×51304134² = 5264228330979912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 51304134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51304133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610722 + ... + 610805.

It is an arithmetic number, because the mean of its divisors is an integer number (7329168).

Almost surely, 2^51304134 is an apocalyptic number.

51304134 is an abundant number, since it is smaller than the sum of its proper divisors (65962554).

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

51304134 is a wasteful number, since it uses less digits than its factorization.

51304134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221539.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51304134 is about 7162.6904163170. The cubic root of 51304134 is about 371.5786795501.

Adding to 51304134 its reverse (43140315), we get a palindrome (94444449).

The spelling of 51304134 in words is "fifty-one million, three hundred four thousand, one hundred thirty-four".