254428581 has 8 divisors (see below), whose sum is σ = 370077984. Its totient is φ = 154199120.

The previous prime is 254428543. The next prime is 254428589. The reversal of 254428581 is 185824452.

It is a happy number.

254428581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 254428581 - 2¹¹ = 254426533 is a prime.

It is a super-2 number, since 2×254428581² = 129467805659347122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254428589) 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, 3854946 + ... + 3855011.

It is an arithmetic number, because the mean of its divisors is an integer number (46259748).

Almost surely, 2^254428581 is an apocalyptic number.

It is an amenable number.

254428581 is a deficient number, since it is larger than the sum of its proper divisors (115649403).

254428581 is a wasteful number, since it uses less digits than its factorization.

254428581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709971.

The product of its digits is 102400, while the sum is 39.

The square root of 254428581 is about 15950.8175652535. The cubic root of 254428581 is about 633.6585491016.

It can be divided in two parts, 2544 and 28581, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 254428581 in words is "two hundred fifty-four million, four hundred twenty-eight thousand, five hundred eighty-one".