961251 has 4 divisors (see below), whose sum is σ = 1281672. Its totient is φ = 640832.

The previous prime is 961243. The next prime is 961273. The reversal of 961251 is 152169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152169 = 3 ⋅50723.

It is a cyclic number.

It is not a de Polignac number, because 961251 - 2³ = 961243 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 961251.

It is not an unprimeable number, because it can be changed into a prime (961201) 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, 160206 + ... + 160211.

It is an arithmetic number, because the mean of its divisors is an integer number (320418).

2⁹⁶¹²⁵¹ is an apocalyptic number.

961251 is a deficient number, since it is larger than the sum of its proper divisors (320421).

961251 is a wasteful number, since it uses less digits than its factorization.

961251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320420.

The product of its digits is 540, while the sum is 24.

The square root of 961251 is about 980.4340875347. The cubic root of 961251 is about 98.6913148083.

The spelling of 961251 in words is "nine hundred sixty-one thousand, two hundred fifty-one".