253278111 has 4 divisors (see below), whose sum is σ = 337704152. Its totient is φ = 168852072.

The previous prime is 253278107. The next prime is 253278119. The reversal of 253278111 is 111872352.

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

It is not a de Polignac number, because 253278111 - 2² = 253278107 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 (253278119) 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, 42213016 + ... + 42213021.

It is an arithmetic number, because the mean of its divisors is an integer number (84426038).

Almost surely, 2^253278111 is an apocalyptic number.

253278111 is a deficient number, since it is larger than the sum of its proper divisors (84426041).

253278111 is an equidigital number, since it uses as much as digits as its factorization.

253278111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84426040.

The product of its digits is 3360, while the sum is 30.

The square root of 253278111 is about 15914.7136637767. The cubic root of 253278111 is about 632.7020177809.

The spelling of 253278111 in words is "two hundred fifty-three million, two hundred seventy-eight thousand, one hundred eleven".