250531513 has 8 divisors (see below), whose sum is σ = 251953128. Its totient is φ = 249114624.

The previous prime is 250531487. The next prime is 250531537. The reversal of 250531513 is 315135052.

It can be written as a sum of positive squares in 4 ways, for example, as 24720784 + 225810729 = 4972^2 + 15027^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 250531513 - 2⁵ = 250531481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250531543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160545 + ... + 162097.

It is an arithmetic number, because the mean of its divisors is an integer number (31494141).

Almost surely, 2^250531513 is an apocalyptic number.

It is an amenable number.

250531513 is a deficient number, since it is larger than the sum of its proper divisors (1421615).

250531513 is a wasteful number, since it uses less digits than its factorization.

250531513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 250531513 is about 15828.1872935596. The cubic root of 250531513 is about 630.4066518783.

Adding to 250531513 its reverse (315135052), we get a palindrome (565666565).

The spelling of 250531513 in words is "two hundred fifty million, five hundred thirty-one thousand, five hundred thirteen".