65161059 has 16 divisors (see below), whose sum is σ = 88833024. Its totient is φ = 42476000.

The previous prime is 65161049. The next prime is 65161069. The reversal of 65161059 is 95016156.

It is an interprime number because it is at equal distance from previous prime (65161049) and next prime (65161069).

It is a cyclic number.

It is not a de Polignac number, because 65161059 - 2⁵ = 65161027 is a prime.

It is a super-2 number, since 2×65161059² = 8491927220002962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65161049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23854 + ... + 26444.

It is an arithmetic number, because the mean of its divisors is an integer number (5552064).

Almost surely, 2^65161059 is an apocalyptic number.

65161059 is a deficient number, since it is larger than the sum of its proper divisors (23671965).

65161059 is a wasteful number, since it uses less digits than its factorization.

65161059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 65161059 is about 8072.2400236861. The cubic root of 65161059 is about 402.4043912155.

The spelling of 65161059 in words is "sixty-five million, one hundred sixty-one thousand, fifty-nine".