254251663 has 4 divisors (see below), whose sum is σ = 255958200. Its totient is φ = 252545128.

The previous prime is 254251661. The next prime is 254251687. The reversal of 254251663 is 366152452.

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 254251663 - 2¹ = 254251661 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 (254251661) 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, 853045 + ... + 853342.

It is an arithmetic number, because the mean of its divisors is an integer number (63989550).

Almost surely, 2^254251663 is an apocalyptic number.

254251663 is a deficient number, since it is larger than the sum of its proper divisors (1706537).

254251663 is a wasteful number, since it uses less digits than its factorization.

254251663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706536.

The product of its digits is 43200, while the sum is 34.

The square root of 254251663 is about 15945.2708663102. The cubic root of 254251663 is about 633.5116426532.

The spelling of 254251663 in words is "two hundred fifty-four million, two hundred fifty-one thousand, six hundred sixty-three".