253933901 has 4 divisors (see below), whose sum is σ = 273467292. Its totient is φ = 234400512.

The previous prime is 253933873. The next prime is 253933943. The reversal of 253933901 is 109339352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 132273001 + 121660900 = 11501^2 + 11030^2 .

It is a cyclic number.

It is not a de Polignac number, because 253933901 - 2¹⁸ = 253671757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253935901) 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, 9766676 + ... + 9766701.

It is an arithmetic number, because the mean of its divisors is an integer number (68366823).

Almost surely, 2^253933901 is an apocalyptic number.

It is an amenable number.

253933901 is a deficient number, since it is larger than the sum of its proper divisors (19533391).

253933901 is a wasteful number, since it uses less digits than its factorization.

253933901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19533390.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 253933901 is about 15935.3036055169. The cubic root of 253933901 is about 633.2476131138.

The spelling of 253933901 in words is "two hundred fifty-three million, nine hundred thirty-three thousand, nine hundred one".