51131202 has 8 divisors (see below), whose sum is σ = 102262416. Its totient is φ = 17043732.

The previous prime is 51131131. The next prime is 51131207. The reversal of 51131202 is 20213115.

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

51131202 is an admirable number.

It is a super-2 number, since 2×51131202² = 5228799635929608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51131207) 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, 4260928 + ... + 4260939.

It is an arithmetic number, because the mean of its divisors is an integer number (12782802).

Almost surely, 2^51131202 is an apocalyptic number.

51131202 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51131202 is a wasteful number, since it uses less digits than its factorization.

51131202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8521872.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51131202 is about 7150.6085055749. The cubic root of 51131202 is about 371.1607133737.

Adding to 51131202 its reverse (20213115), we get a palindrome (71344317).

It can be divided in two parts, 511 and 31202, that added together give a palindrome (31713).

The spelling of 51131202 in words is "fifty-one million, one hundred thirty-one thousand, two hundred two".