51604130 has 8 divisors (see below), whose sum is σ = 92887452. Its totient is φ = 20641648.

The previous prime is 51604127. The next prime is 51604183. The reversal of 51604130 is 3140615.

It can be written as a sum of positive squares in 2 ways, for example, as 47348161 + 4255969 = 6881^2 + 2063^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2580197 + ... + 2580216.

Almost surely, 2^51604130 is an apocalyptic number.

51604130 is a deficient number, since it is larger than the sum of its proper divisors (41283322).

51604130 is a wasteful number, since it uses less digits than its factorization.

51604130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160420.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51604130 is about 7183.6014644466. The cubic root of 51604130 is about 372.3015293337.

Adding to 51604130 its reverse (3140615), we get a palindrome (54744745).

The spelling of 51604130 in words is "fifty-one million, six hundred four thousand, one hundred thirty".