250969961 has 4 divisors (see below), whose sum is σ = 273785424. Its totient is φ = 228154500.

The previous prime is 250969933. The next prime is 250969967. The reversal of 250969961 is 169969052.

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 250969961 - 2¹⁰ = 250968937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (250969967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11407715 + ... + 11407736.

It is an arithmetic number, because the mean of its divisors is an integer number (68446356).

Almost surely, 2^250969961 is an apocalyptic number.

It is an amenable number.

250969961 is a deficient number, since it is larger than the sum of its proper divisors (22815463).

250969961 is a wasteful number, since it uses less digits than its factorization.

250969961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22815462.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 250969961 is about 15842.0314669552. The cubic root of 250969961 is about 630.7741897431.

The spelling of 250969961 in words is "two hundred fifty million, nine hundred sixty-nine thousand, nine hundred sixty-one".