250413021 has 6 divisors (see below), whose sum is σ = 361707710. Its totient is φ = 166942008.

The previous prime is 250413019. The next prime is 250413041. The reversal of 250413021 is 120314052.

250413021 is a `hidden beast` number, since 250 + 413 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 195860025 + 54552996 = 13995^2 + 7386^2 .

It is not a de Polignac number, because 250413021 - 2¹ = 250413019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250412985 and 250413003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250413011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13911826 + ... + 13911843.

Almost surely, 2^250413021 is an apocalyptic number.

It is an amenable number.

250413021 is a deficient number, since it is larger than the sum of its proper divisors (111294689).

250413021 is a wasteful number, since it uses less digits than its factorization.

250413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27823675 (or 27823672 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 250413021 is about 15824.4437816942. The cubic root of 250413021 is about 630.3072499792.

Adding to 250413021 its reverse (120314052), we get a palindrome (370727073).

The spelling of 250413021 in words is "two hundred fifty million, four hundred thirteen thousand, twenty-one".