254590987 has 8 divisors (see below), whose sum is σ = 291411936. Its totient is φ = 217882752.

The previous prime is 254590981. The next prime is 254590991. The reversal of 254590987 is 789095452.

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-254590987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254590987.

It is not an unprimeable number, because it can be changed into a prime (254590981) 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, 23278 + ... + 32419.

It is an arithmetic number, because the mean of its divisors is an integer number (36426492).

Almost surely, 2^254590987 is an apocalyptic number.

254590987 is a deficient number, since it is larger than the sum of its proper divisors (36820949).

254590987 is an equidigital number, since it uses as much as digits as its factorization.

254590987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56357.

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 254590987 is about 15955.9075893539. The cubic root of 254590987 is about 633.7933453593.

The spelling of 254590987 in words is "two hundred fifty-four million, five hundred ninety thousand, nine hundred eighty-seven".