253645332 has 24 divisors (see below), whose sum is σ = 593326272. Its totient is φ = 84336000.

The previous prime is 253645313. The next prime is 253645369. The reversal of 253645332 is 233546352.

It is a junction number, because it is equal to n+sod(n) for n = 253645293 and 253645302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21544 + ... + 31167.

It is an arithmetic number, because the mean of its divisors is an integer number (24721928).

Almost surely, 2^253645332 is an apocalyptic number.

It is an amenable number.

253645332 is an abundant number, since it is smaller than the sum of its proper divisors (339680940).

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

253645332 is a wasteful number, since it uses less digits than its factorization.

253645332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53119 (or 53117 counting only the distinct ones).

The product of its digits is 64800, while the sum is 33.

The square root of 253645332 is about 15926.2466388035. The cubic root of 253645332 is about 633.0076492316.

The spelling of 253645332 in words is "two hundred fifty-three million, six hundred forty-five thousand, three hundred thirty-two".