254363661 has 6 divisors (see below), whose sum is σ = 367414190. Its totient is φ = 169575768.

The previous prime is 254363657. The next prime is 254363687. The reversal of 254363661 is 166363452.

It can be written as a sum of positive squares in only one way, i.e., 136749636 + 117614025 = 11694^2 + 10845^2 .

It is not a de Polignac number, because 254363661 - 2² = 254363657 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 (254363561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14131306 + ... + 14131323.

Almost surely, 2^254363661 is an apocalyptic number.

It is an amenable number.

254363661 is a deficient number, since it is larger than the sum of its proper divisors (113050529).

254363661 is a wasteful number, since it uses less digits than its factorization.

254363661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28262635 (or 28262632 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 254363661 is about 15948.7824300164. The cubic root of 254363661 is about 633.6046497425.

The spelling of 254363661 in words is "two hundred fifty-four million, three hundred sixty-three thousand, six hundred sixty-one".