254475981 has 6 divisors (see below), whose sum is σ = 367576430. Its totient is φ = 169650648.

The previous prime is 254475953. The next prime is 254476031. The reversal of 254475981 is 189574452.

254475981 is a `hidden beast` number, since 2 + 54 + 4 + 7 + 598 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 188622756 + 65853225 = 13734^2 + 8115^2 .

It is not a de Polignac number, because 254475981 - 2¹³ = 254467789 is a prime.

It is a super-2 number, since 2×254475981² = 129516049811824722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254475181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14137546 + ... + 14137563.

Almost surely, 2^254475981 is an apocalyptic number.

It is an amenable number.

254475981 is a deficient number, since it is larger than the sum of its proper divisors (113100449).

254475981 is a wasteful number, since it uses less digits than its factorization.

254475981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28275115 (or 28275112 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 254475981 is about 15952.3033133150. The cubic root of 254475981 is about 633.6978968171.

The spelling of 254475981 in words is "two hundred fifty-four million, four hundred seventy-five thousand, nine hundred eighty-one".