961157105 has 4 divisors (see below), whose sum is σ = 1153388532. Its totient is φ = 768925680.

The previous prime is 961157083. The next prime is 961157233. The reversal of 961157105 is 501751169.

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: 501751169 = 61 ⋅8225429.

It can be written as a sum of positive squares in 2 ways, for example, as 628204096 + 332953009 = 25064^2 + 18247^2 .

It is not a de Polignac number, because 961157105 - 2¹² = 961153009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96115706 + ... + 96115715.

It is an arithmetic number, because the mean of its divisors is an integer number (288347133).

Almost surely, 2^961157105 is an apocalyptic number.

It is an amenable number.

961157105 is a deficient number, since it is larger than the sum of its proper divisors (192231427).

961157105 is a wasteful number, since it uses less digits than its factorization.

961157105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192231426.

The product of its (nonzero) digits is 9450, while the sum is 35.

The square root of 961157105 is about 31002.5338480583. The cubic root of 961157105 is about 986.8810131439.

The spelling of 961157105 in words is "nine hundred sixty-one million, one hundred fifty-seven thousand, one hundred five".