65523161 has 8 divisors (see below), whose sum is σ = 71539200. Its totient is φ = 59517040.

The previous prime is 65523149. The next prime is 65523167. The reversal of 65523161 is 16132556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65523161 - 2⁶ = 65523097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65523167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21320 + ... + 24198.

It is an arithmetic number, because the mean of its divisors is an integer number (8942400).

Almost surely, 2^65523161 is an apocalyptic number.

It is an amenable number.

65523161 is a deficient number, since it is larger than the sum of its proper divisors (6016039).

65523161 is a wasteful number, since it uses less digits than its factorization.

65523161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959.

The product of its digits is 5400, while the sum is 29.

The square root of 65523161 is about 8094.6377930084. The cubic root of 65523161 is about 403.1484059162.

The spelling of 65523161 in words is "sixty-five million, five hundred twenty-three thousand, one hundred sixty-one".