51161252 has 12 divisors (see below), whose sum is σ = 89582976. Its totient is φ = 25566120.

The previous prime is 51161237. The next prime is 51161261. The reversal of 51161252 is 25216115.

It is a happy number.

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, 9977 + ... + 14207.

It is an arithmetic number, because the mean of its divisors is an integer number (7465248).

Almost surely, 2^51161252 is an apocalyptic number.

It is an amenable number.

51161252 is a deficient number, since it is larger than the sum of its proper divisors (38421724).

51161252 is a wasteful number, since it uses less digits than its factorization.

51161252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7258 (or 7256 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 51161252 is about 7152.7094167176. The cubic root of 51161252 is about 371.2334099839.

Adding to 51161252 its reverse (25216115), we get a palindrome (76377367).

The spelling of 51161252 in words is "fifty-one million, one hundred sixty-one thousand, two hundred fifty-two".