161302655 has 4 divisors (see below), whose sum is σ = 193563192. Its totient is φ = 129042120.

The previous prime is 161302639. The next prime is 161302667. The reversal of 161302655 is 556203161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556203161 = 17 ⋅32717833.

It is not a de Polignac number, because 161302655 - 2⁴ = 161302639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16130261 + ... + 16130270.

It is an arithmetic number, because the mean of its divisors is an integer number (48390798).

Almost surely, 2^161302655 is an apocalyptic number.

161302655 is a deficient number, since it is larger than the sum of its proper divisors (32260537).

161302655 is an equidigital number, since it uses as much as digits as its factorization.

161302655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32260536.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 161302655 is about 12700.4982185739. The cubic root of 161302655 is about 544.3528553030.

The spelling of 161302655 in words is "one hundred sixty-one million, three hundred two thousand, six hundred fifty-five".