961501 has 4 divisors (see below), whose sum is σ = 963900. Its totient is φ = 959104.

The previous prime is 961487. The next prime is 961507. The reversal of 961501 is 105169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105169 = 251 ⋅419.

It can be written as a sum of positive squares in 2 ways, for example, as 632025 + 329476 = 795^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 961501 - 2⁹ = 960989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961507) 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, 436 + ... + 1453.

It is an arithmetic number, because the mean of its divisors is an integer number (240975).

2⁹⁶¹⁵⁰¹ is an apocalyptic number.

It is an amenable number.

961501 is a deficient number, since it is larger than the sum of its proper divisors (2399).

961501 is a wasteful number, since it uses less digits than its factorization.

961501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 961501 is about 980.5615737933. The cubic root of 961501 is about 98.6998698718.

The spelling of 961501 in words is "nine hundred sixty-one thousand, five hundred one".