253665148 has 24 divisors (see below), whose sum is σ = 484812720. Its totient is φ = 115173120.

The previous prime is 253665121. The next prime is 253665187. The reversal of 253665148 is 841566352.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 253665148.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44340 + ... + 49732.

It is an arithmetic number, because the mean of its divisors is an integer number (20200530).

Almost surely, 2^253665148 is an apocalyptic number.

It is an amenable number.

253665148 is a deficient number, since it is larger than the sum of its proper divisors (231147572).

253665148 is a wasteful number, since it uses less digits than its factorization.

253665148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477 (or 6475 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 253665148 is about 15926.8687443578. The cubic root of 253665148 is about 633.0241333420.

The spelling of 253665148 in words is "two hundred fifty-three million, six hundred sixty-five thousand, one hundred forty-eight".