161255347 has 4 divisors (see below), whose sum is σ = 175914936. Its totient is φ = 146595760.

The previous prime is 161255317. The next prime is 161255351. The reversal of 161255347 is 743552161.

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 161255347 - 2⁷ = 161255219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161255317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7329778 + ... + 7329799.

It is an arithmetic number, because the mean of its divisors is an integer number (43978734).

Almost surely, 2^161255347 is an apocalyptic number.

161255347 is a deficient number, since it is larger than the sum of its proper divisors (14659589).

161255347 is a wasteful number, since it uses less digits than its factorization.

161255347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14659588.

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

The square root of 161255347 is about 12698.6356353744. The cubic root of 161255347 is about 544.2996328625.

The spelling of 161255347 in words is "one hundred sixty-one million, two hundred fifty-five thousand, three hundred forty-seven".