254564861 has 8 divisors (see below), whose sum is σ = 256668000. Its totient is φ = 252467280.

The previous prime is 254564857. The next prime is 254564879. The reversal of 254564861 is 168465452.

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 254564861 - 2² = 254564857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254560861) 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, 173750 + ... + 175208.

It is an arithmetic number, because the mean of its divisors is an integer number (32083500).

Almost surely, 2^254564861 is an apocalyptic number.

It is an amenable number.

254564861 is a deficient number, since it is larger than the sum of its proper divisors (2103139).

254564861 is a wasteful number, since it uses less digits than its factorization.

254564861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 230400, while the sum is 41.

The square root of 254564861 is about 15955.0888747133. The cubic root of 254564861 is about 633.7716647654.

The spelling of 254564861 in words is "two hundred fifty-four million, five hundred sixty-four thousand, eight hundred sixty-one".