161353507 has 4 divisors (see below), whose sum is σ = 184404016. Its totient is φ = 138303000.

The previous prime is 161353499. The next prime is 161353589. The reversal of 161353507 is 705353161.

161353507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 161353507 - 2³ = 161353499 is a prime.

It is the 12703-rd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161353207) by changing a digit.

It is a nontrivial repunit in base 12702.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11525244 + ... + 11525257.

It is an arithmetic number, because the mean of its divisors is an integer number (46101004).

Almost surely, 2^161353507 is an apocalyptic number.

161353507 is a deficient number, since it is larger than the sum of its proper divisors (23050509).

161353507 is an equidigital number, since it uses as much as digits as its factorization.

161353507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23050508.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 161353507 is about 12702.5000295217. The cubic root of 161353507 is about 544.4100532104.

The spelling of 161353507 in words is "one hundred sixty-one million, three hundred fifty-three thousand, five hundred seven".