51133360 has 20 divisors (see below), whose sum is σ = 118885248. Its totient is φ = 20453312.

The previous prime is 51133343. The next prime is 51133367. The reversal of 51133360 is 6333115.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×51133360² = 5229241009779200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51133367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319504 + ... + 319663.

Almost surely, 2^51133360 is an apocalyptic number.

It is an amenable number.

51133360 is an abundant number, since it is smaller than the sum of its proper divisors (67751888).

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

51133360 is a wasteful number, since it uses less digits than its factorization.

51133360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639180 (or 639174 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 51133360 is about 7150.7594002316. The cubic root of 51133360 is about 371.1659349313.

Adding to 51133360 its reverse (6333115), we get a palindrome (57466475).

The spelling of 51133360 in words is "fifty-one million, one hundred thirty-three thousand, three hundred sixty".