255003981 has 8 divisors (see below), whose sum is σ = 340286880. Its totient is φ = 169861872.

The previous prime is 255003977. The next prime is 255004003. The reversal of 255003981 is 189300552.

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

It is not a de Polignac number, because 255003981 - 2² = 255003977 is a prime.

It is a super-2 number, since 2×255003981² = 130054060651696722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255003911) 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, 30895 + ... + 38268.

It is an arithmetic number, because the mean of its divisors is an integer number (42535860).

Almost surely, 2^255003981 is an apocalyptic number.

It is an amenable number.

255003981 is a deficient number, since it is larger than the sum of its proper divisors (85282899).

255003981 is a wasteful number, since it uses less digits than its factorization.

255003981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70395.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 255003981 is about 15968.8440721300. The cubic root of 255003981 is about 634.1358704975.

The spelling of 255003981 in words is "two hundred fifty-five million, three thousand, nine hundred eighty-one".