51135204 has 24 divisors (see below), whose sum is σ = 121098208. Its totient is φ = 16790400.

The previous prime is 51135191. The next prime is 51135209. The reversal of 51135204 is 40253115.

It is a super-2 number, since 2×51135204² = 5229618176243232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51135209) 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, 30997 + ... + 32604.

Almost surely, 2^51135204 is an apocalyptic number.

It is an amenable number.

51135204 is an abundant number, since it is smaller than the sum of its proper divisors (69963004).

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

51135204 is a wasteful number, since it uses less digits than its factorization.

51135204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63675 (or 63673 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51135204 is about 7150.8883364237. Note that the first 3 decimals coincide. The cubic root of 51135204 is about 371.1703966093.

Adding to 51135204 its reverse (40253115), we get a palindrome (91388319).

The spelling of 51135204 in words is "fifty-one million, one hundred thirty-five thousand, two hundred four".