161259 has 12 divisors (see below), whose sum is σ = 250344. Its totient is φ = 92064.

The previous prime is 161237. The next prime is 161263. The reversal of 161259 is 952161.

It is not a de Polignac number, because 161259 - 2¹² = 157163 is a prime.

161259 is a modest number, since divided by 259 gives 161 as remainder.

161259 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 161259.

It is not an unprimeable number, because it can be changed into a prime (161059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (20862).

2¹⁶¹²⁵⁹ is an apocalyptic number.

161259 is a deficient number, since it is larger than the sum of its proper divisors (89085).

161259 is a wasteful number, since it uses less digits than its factorization.

161259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1107 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 161259 is about 401.5706662594. The cubic root of 161259 is about 54.4303742931.

It can be divided in two parts, 16 and 1259, that added together give a triangular number (1275 = T₅₀).

The spelling of 161259 in words is "one hundred sixty-one thousand, two hundred fifty-nine".