161499 has 16 divisors (see below), whose sum is σ = 239904. Its totient is φ = 96000.

The previous prime is 161471. The next prime is 161503. The reversal of 161499 is 994161.

It is not a de Polignac number, because 161499 - 2¹⁷ = 30427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161459) 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, 1549 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (14994).

2¹⁶¹⁴⁹⁹ is an apocalyptic number.

161499 is a deficient number, since it is larger than the sum of its proper divisors (78405).

161499 is a wasteful number, since it uses less digits than its factorization.

161499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158.

The product of its digits is 1944, while the sum is 30.

The square root of 161499 is about 401.8693817648. The cubic root of 161499 is about 54.4573636178.

The spelling of 161499 in words is "one hundred sixty-one thousand, four hundred ninety-nine".