961751 has 4 divisors (see below), whose sum is σ = 1099152. Its totient is φ = 824352.

The previous prime is 961747. The next prime is 961757. The reversal of 961751 is 157169.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157169 = 73 ⋅2153.

It is a cyclic number.

It is not a de Polignac number, because 961751 - 2² = 961747 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68690 + ... + 68703.

It is an arithmetic number, because the mean of its divisors is an integer number (274788).

2⁹⁶¹⁷⁵¹ is an apocalyptic number.

961751 is a deficient number, since it is larger than the sum of its proper divisors (137401).

961751 is a wasteful number, since it uses less digits than its factorization.

961751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137400.

The product of its digits is 1890, while the sum is 29.

The square root of 961751 is about 980.6890434791. The cubic root of 961751 is about 98.7084234525.

The spelling of 961751 in words is "nine hundred sixty-one thousand, seven hundred fifty-one".