250164661 has 4 divisors (see below), whose sum is σ = 254404800. Its totient is φ = 245924524.

The previous prime is 250164647. The next prime is 250164679. The reversal of 250164661 is 166461052.

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 250164661 - 2⁹ = 250164149 is a prime.

It is a super-2 number, since 2×250164661² = 125164715226489842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250164631) 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, 2119981 + ... + 2120098.

It is an arithmetic number, because the mean of its divisors is an integer number (63601200).

Almost surely, 2^250164661 is an apocalyptic number.

It is an amenable number.

250164661 is a deficient number, since it is larger than the sum of its proper divisors (4240139).

250164661 is an equidigital number, since it uses as much as digits as its factorization.

250164661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240138.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 250164661 is about 15816.5944817461. The cubic root of 250164661 is about 630.0988011669.

It can be divided in two parts, 2501 and 64661, that multiplied together give a palindrome (161717161).

The spelling of 250164661 in words is "two hundred fifty million, one hundred sixty-four thousand, six hundred sixty-one".