254045981 has 8 divisors (see below), whose sum is σ = 291163584. Its totient is φ = 217134720.

The previous prime is 254045947. The next prime is 254045983. The reversal of 254045981 is 189540452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254045981 is a prime.

It is a super-2 number, since 2×254045981² = 129078720924504722, which contains 22 as substring.

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 (254045983) 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, 48935 + ... + 53876.

It is an arithmetic number, because the mean of its divisors is an integer number (36395448).

Almost surely, 2^254045981 is an apocalyptic number.

It is an amenable number.

254045981 is a deficient number, since it is larger than the sum of its proper divisors (37117603).

254045981 is a wasteful number, since it uses less digits than its factorization.

254045981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103171.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 254045981 is about 15938.8199374985. The cubic root of 254045981 is about 633.3407659023.

The spelling of 254045981 in words is "two hundred fifty-four million, forty-five thousand, nine hundred eighty-one".