86400161 has 4 divisors (see below), whose sum is σ = 88507524. Its totient is φ = 84292800.

The previous prime is 86400157. The next prime is 86400191. The reversal of 86400161 is 16100468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4389025 + 82011136 = 2095^2 + 9056^2 .

It is a cyclic number.

It is not a de Polignac number, because 86400161 - 2² = 86400157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86400161.

It is not an unprimeable number, because it can be changed into a prime (86400101) 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, 1053620 + ... + 1053701.

It is an arithmetic number, because the mean of its divisors is an integer number (22126881).

Almost surely, 2^86400161 is an apocalyptic number.

It is an amenable number.

86400161 is a deficient number, since it is larger than the sum of its proper divisors (2107363).

86400161 is a wasteful number, since it uses less digits than its factorization.

86400161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107362.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 86400161 is about 9295.1686913149. The cubic root of 86400161 is about 442.0840544335.

The spelling of 86400161 in words is "eighty-six million, four hundred thousand, one hundred sixty-one".