250515121 has 4 divisors (see below), whose sum is σ = 254761200. Its totient is φ = 246269044.

The previous prime is 250515107. The next prime is 250515131. The reversal of 250515121 is 121515052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 250515121 - 2²³ = 242126513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250515092 and 250515101.

It is not an unprimeable number, because it can be changed into a prime (250515101) 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 3 ways as a sum of consecutive naturals, for example, 2122951 + ... + 2123068.

It is an arithmetic number, because the mean of its divisors is an integer number (63690300).

Almost surely, 2^250515121 is an apocalyptic number.

It is an amenable number.

250515121 is a deficient number, since it is larger than the sum of its proper divisors (4246079).

250515121 is an equidigital number, since it uses as much as digits as its factorization.

250515121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246078.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 250515121 is about 15827.6694746889. The cubic root of 250515121 is about 630.3929026416.

The spelling of 250515121 in words is "two hundred fifty million, five hundred fifteen thousand, one hundred twenty-one".