254532581 has 2 divisors, whose sum is σ = 254532582. Its totient is φ = 254532580.

The previous prime is 254532557. The next prime is 254532617. The reversal of 254532581 is 185235452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149059681 + 105472900 = 12209^2 + 10270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254532581 is a prime.

It is a super-2 number, since 2×254532581² = 129573669581043122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254532541) 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 as a sum of consecutive naturals, namely, 127266290 + 127266291.

It is an arithmetic number, because the mean of its divisors is an integer number (127266291).

Almost surely, 2^254532581 is an apocalyptic number.

It is an amenable number.

254532581 is a deficient number, since it is larger than the sum of its proper divisors (1).

254532581 is an equidigital number, since it uses as much as digits as its factorization.

254532581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48000, while the sum is 35.

The square root of 254532581 is about 15954.0772531664. The cubic root of 254532581 is about 633.7448752417.

The spelling of 254532581 in words is "two hundred fifty-four million, five hundred thirty-two thousand, five hundred eighty-one".