253791667 has 4 divisors (see below), whose sum is σ = 254545096. Its totient is φ = 253038240.

The previous prime is 253791661. The next prime is 253791677. The reversal of 253791667 is 766197352.

253791667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 253791667 - 2⁷ = 253791539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253791661) 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, 376209 + ... + 376882.

It is an arithmetic number, because the mean of its divisors is an integer number (63636274).

Almost surely, 2^253791667 is an apocalyptic number.

253791667 is a deficient number, since it is larger than the sum of its proper divisors (753429).

253791667 is an equidigital number, since it uses as much as digits as its factorization.

253791667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753428.

The product of its digits is 476280, while the sum is 46.

The square root of 253791667 is about 15930.8401222283. The cubic root of 253791667 is about 633.1293590294.

The spelling of 253791667 in words is "two hundred fifty-three million, seven hundred ninety-one thousand, six hundred sixty-seven".