161423755 has 16 divisors (see below), whose sum is σ = 207144864. Its totient is φ = 120332800.

The previous prime is 161423747. The next prime is 161423767. The reversal of 161423755 is 557324161.

161423755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161423755 - 2³ = 161423747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161423755.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817 + ... + 17986.

It is an arithmetic number, because the mean of its divisors is an integer number (12946554).

Almost surely, 2^161423755 is an apocalyptic number.

161423755 is a deficient number, since it is larger than the sum of its proper divisors (45721109).

161423755 is a wasteful number, since it uses less digits than its factorization.

161423755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18926.

The product of its digits is 25200, while the sum is 34.

The square root of 161423755 is about 12705.2648535951. The cubic root of 161423755 is about 544.4890478135.

The spelling of 161423755 in words is "one hundred sixty-one million, four hundred twenty-three thousand, seven hundred fifty-five".