250002981 has 6 divisors (see below), whose sum is σ = 361115430. Its totient is φ = 166668648.

The previous prime is 250002967. The next prime is 250003051. The reversal of 250002981 is 189200052.

It can be written as a sum of positive squares in only one way, i.e., 202806081 + 47196900 = 14241^2 + 6870^2 .

It is not a de Polignac number, because 250002981 - 2⁹ = 250002469 is a prime.

It is a super-2 number, since 2×250002981² = 125002981017772722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250002281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13889046 + ... + 13889063.

It is an arithmetic number, because the mean of its divisors is an integer number (60185905).

Almost surely, 2^250002981 is an apocalyptic number.

It is an amenable number.

250002981 is a deficient number, since it is larger than the sum of its proper divisors (111112449).

250002981 is a wasteful number, since it uses less digits than its factorization.

250002981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778115 (or 27778112 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 250002981 is about 15811.4825680579. The cubic root of 250002981 is about 629.9630288206.

The spelling of 250002981 in words is "two hundred fifty million, two thousand, nine hundred eighty-one".