51133236 has 48 divisors (see below), whose sum is σ = 148753920. Its totient is φ = 13281120.

The previous prime is 51133213. The next prime is 51133241. The reversal of 51133236 is 63233115.

It is a happy number.

It is a super-2 number, since 2×51133236² = 5229215647663392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26746 + ... + 28593.

It is an arithmetic number, because the mean of its divisors is an integer number (3099040).

Almost surely, 2^51133236 is an apocalyptic number.

It is an amenable number.

51133236 is an abundant number, since it is smaller than the sum of its proper divisors (97620684).

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

51133236 is a wasteful number, since it uses less digits than its factorization.

51133236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55364 (or 55362 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 51133236 is about 7150.7507298185. The cubic root of 51133236 is about 371.1656349014.

The spelling of 51133236 in words is "fifty-one million, one hundred thirty-three thousand, two hundred thirty-six".