254617891 has 8 divisors (see below), whose sum is σ = 294104304. Its totient is φ = 217854720.

The previous prime is 254617873. The next prime is 254617907. The reversal of 254617891 is 198716452.

254617891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 254617891 - 2⁵ = 254617859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254617801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680610 + ... + 680983.

It is an arithmetic number, because the mean of its divisors is an integer number (36763038).

Almost surely, 2^254617891 is an apocalyptic number.

254617891 is a deficient number, since it is larger than the sum of its proper divisors (39486413).

254617891 is a wasteful number, since it uses less digits than its factorization.

254617891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361621.

The product of its digits is 120960, while the sum is 43.

The square root of 254617891 is about 15956.7506404030. The cubic root of 254617891 is about 633.8156700244.

The spelling of 254617891 in words is "two hundred fifty-four million, six hundred seventeen thousand, eight hundred ninety-one".