961541 has 4 divisors (see below), whose sum is σ = 1098912. Its totient is φ = 824172.

The previous prime is 961531. The next prime is 961547. The reversal of 961541 is 145169.

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, and also an emirpimes, since its reverse is a distinct semiprime: 145169 = 179 ⋅811.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961541 is a prime.

It is a super-2 number, since 2×961541² = 1849122189362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 961541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961547) 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, 68675 + ... + 68688.

It is an arithmetic number, because the mean of its divisors is an integer number (274728).

2⁹⁶¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

961541 is a deficient number, since it is larger than the sum of its proper divisors (137371).

961541 is a wasteful number, since it uses less digits than its factorization.

961541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137370.

The product of its digits is 1080, while the sum is 26.

The square root of 961541 is about 980.5819700566. The cubic root of 961541 is about 98.7012385444.

The spelling of 961541 in words is "nine hundred sixty-one thousand, five hundred forty-one".