253650321 has 6 divisors (see below), whose sum is σ = 366383810. Its totient is φ = 169100208.

The previous prime is 253650317. The next prime is 253650329. The reversal of 253650321 is 123056352.

253650321 is a `hidden beast` number, since 2 + 5 + 3 + 650 + 3 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 162180225 + 91470096 = 12735^2 + 9564^2 .

It is not a de Polignac number, because 253650321 - 2² = 253650317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253650329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14091676 + ... + 14091693.

Almost surely, 2^253650321 is an apocalyptic number.

It is an amenable number.

253650321 is a deficient number, since it is larger than the sum of its proper divisors (112733489).

253650321 is a wasteful number, since it uses less digits than its factorization.

253650321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28183375 (or 28183372 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 253650321 is about 15926.4032662745. The cubic root of 253650321 is about 633.0117994551.

The spelling of 253650321 in words is "two hundred fifty-three million, six hundred fifty thousand, three hundred twenty-one".