254991767 has 4 divisors (see below), whose sum is σ = 255071040. Its totient is φ = 254912496.

The previous prime is 254991727. The next prime is 254991791. The reversal of 254991767 is 767199452.

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 254991767 - 2⁸ = 254991511 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 (254991727) 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, 34598 + ... + 41315.

It is an arithmetic number, because the mean of its divisors is an integer number (63767760).

Almost surely, 2^254991767 is an apocalyptic number.

254991767 is a deficient number, since it is larger than the sum of its proper divisors (79273).

254991767 is an equidigital number, since it uses as much as digits as its factorization.

254991767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79272.

The product of its digits is 952560, while the sum is 50.

The square root of 254991767 is about 15968.4616353611. The cubic root of 254991767 is about 634.1257458723.

The spelling of 254991767 in words is "two hundred fifty-four million, nine hundred ninety-one thousand, seven hundred sixty-seven".