254724457 has 4 divisors (see below), whose sum is σ = 274318660. Its totient is φ = 235130256.

The previous prime is 254724451. The next prime is 254724461. The reversal of 254724457 is 754427452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24413481 + 230310976 = 4941^2 + 15176^2 .

It is a cyclic number.

It is not a de Polignac number, because 254724457 - 2¹⁹ = 254200169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254724451) 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, 9797082 + ... + 9797107.

It is an arithmetic number, because the mean of its divisors is an integer number (68579665).

Almost surely, 2^254724457 is an apocalyptic number.

It is an amenable number.

254724457 is a deficient number, since it is larger than the sum of its proper divisors (19594203).

254724457 is a wasteful number, since it uses less digits than its factorization.

254724457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19594202.

The product of its digits is 313600, while the sum is 40.

The square root of 254724457 is about 15960.0895047616. The cubic root of 254724457 is about 633.9040819575.

It can be divided in two parts, 25472 and 4457, that added together give a square (29929 = 173²).

The spelling of 254724457 in words is "two hundred fifty-four million, seven hundred twenty-four thousand, four hundred fifty-seven".