253680591 has 4 divisors (see below), whose sum is σ = 338240792. Its totient is φ = 169120392.

The previous prime is 253680577. The next prime is 253680599. The reversal of 253680591 is 195086352.

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

It is not a de Polignac number, because 253680591 - 2¹⁴ = 253664207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253680599) 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, 42280096 + ... + 42280101.

It is an arithmetic number, because the mean of its divisors is an integer number (84560198).

Almost surely, 2^253680591 is an apocalyptic number.

253680591 is a deficient number, since it is larger than the sum of its proper divisors (84560201).

253680591 is an equidigital number, since it uses as much as digits as its factorization.

253680591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84560200.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 253680591 is about 15927.3535466505. The cubic root of 253680591 is about 633.0369791394.

The spelling of 253680591 in words is "two hundred fifty-three million, six hundred eighty thousand, five hundred ninety-one".