161372 has 6 divisors (see below), whose sum is σ = 282408. Its totient is φ = 80684.

The previous prime is 161363. The next prime is 161377. The reversal of 161372 is 273161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161377) by changing a digit.

161372 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20168 + ... + 20175.

It is an arithmetic number, because the mean of its divisors is an integer number (47068).

2¹⁶¹³⁷² is an apocalyptic number.

It is an amenable number.

161372 is a deficient number, since it is larger than the sum of its proper divisors (121036).

161372 is a wasteful number, since it uses less digits than its factorization.

161372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40347 (or 40345 counting only the distinct ones).

The product of its digits is 252, while the sum is 20.

The square root of 161372 is about 401.7113391479. The cubic root of 161372 is about 54.4430851003.

It can be divided in two parts, 16 and 1372, that multiplied together give a cube (21952 = 28³).

The spelling of 161372 in words is "one hundred sixty-one thousand, three hundred seventy-two".