251133132 has 24 divisors (see below), whose sum is σ = 586236672. Its totient is φ = 83674000.

The previous prime is 251133119. The next prime is 251133143. The reversal of 251133132 is 231331152.

It is a junction number, because it is equal to n+sod(n) for n = 251133099 and 251133108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44257 + ... + 49607.

It is an arithmetic number, because the mean of its divisors is an integer number (24426528).

Almost surely, 2^251133132 is an apocalyptic number.

It is an amenable number.

251133132 is an abundant number, since it is smaller than the sum of its proper divisors (335103540).

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

251133132 is a wasteful number, since it uses less digits than its factorization.

251133132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9269 (or 9267 counting only the distinct ones).

The product of its digits is 540, while the sum is 21.

The square root of 251133132 is about 15847.1805694262. The cubic root of 251133132 is about 630.9108618203.

Adding to 251133132 its reverse (231331152), we get a palindrome (482464284).

The spelling of 251133132 in words is "two hundred fifty-one million, one hundred thirty-three thousand, one hundred thirty-two".