254990 has 16 divisors (see below), whose sum is σ = 470448. Its totient is φ = 99456.

The previous prime is 254987. The next prime is 254993. The reversal of 254990 is 99452.

254990 = 55² + 56² + ... + 97².

254990 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (254987) and next prime (254993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254993) 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, 134 + ... + 726.

It is an arithmetic number, because the mean of its divisors is an integer number (29403).

2²⁵⁴⁹⁹⁰ is an apocalyptic number.

254990 is a deficient number, since it is larger than the sum of its proper divisors (215458).

254990 is a wasteful number, since it uses less digits than its factorization.

254990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 254990 is about 504.9653453456. The cubic root of 254990 is about 63.4124281115.

It can be divided in two parts, 25 and 4990, that multiplied together give a triangular number (124750 = T₄₉₉).

The spelling of 254990 in words is "two hundred fifty-four thousand, nine hundred ninety".