161530955 has 8 divisors (see below), whose sum is σ = 202264992. Its totient is φ = 123606208.

The previous prime is 161530933. The next prime is 161530961. The reversal of 161530955 is 559035161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161530955 - 2¹⁴ = 161514571 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702194 + ... + 702423.

It is an arithmetic number, because the mean of its divisors is an integer number (25283124).

Almost surely, 2^161530955 is an apocalyptic number.

161530955 is a deficient number, since it is larger than the sum of its proper divisors (40734037).

161530955 is a wasteful number, since it uses less digits than its factorization.

161530955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404645.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 161530955 is about 12709.4828769703. The cubic root of 161530955 is about 544.6095511638.

The spelling of 161530955 in words is "one hundred sixty-one million, five hundred thirty thousand, nine hundred fifty-five".