961955 has 4 divisors (see below), whose sum is σ = 1154352. Its totient is φ = 769560.

The previous prime is 961943. The next prime is 961957. The reversal of 961955 is 559169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559169 = 13 ⋅43013.

It is not a de Polignac number, because 961955 - 2¹⁰ = 960931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961957) 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, 96191 + ... + 96200.

It is an arithmetic number, because the mean of its divisors is an integer number (288588).

2⁹⁶¹⁹⁵⁵ is an apocalyptic number.

961955 is a deficient number, since it is larger than the sum of its proper divisors (192397).

961955 is a wasteful number, since it uses less digits than its factorization.

961955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192396.

The product of its digits is 12150, while the sum is 35.

The square root of 961955 is about 980.7930464680. The cubic root of 961955 is about 98.7154020762.

The spelling of 961955 in words is "nine hundred sixty-one thousand, nine hundred fifty-five".