961511 has 2 divisors, whose sum is σ = 961512. Its totient is φ = 961510.

The previous prime is 961507. The next prime is 961529. The reversal of 961511 is 115169.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 961511 - 2² = 961507 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480755 + 480756.

It is an arithmetic number, because the mean of its divisors is an integer number (480756).

2⁹⁶¹⁵¹¹ is an apocalyptic number.

961511 is a deficient number, since it is larger than the sum of its proper divisors (1).

961511 is an equidigital number, since it uses as much as digits as its factorization.

961511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 23.

The square root of 961511 is about 980.5666728989. The cubic root of 961511 is about 98.7002120435.

The spelling of 961511 in words is "nine hundred sixty-one thousand, five hundred eleven".