30161955 has 16 divisors (see below), whose sum is σ = 48328704. Its totient is φ = 16063200.

The previous prime is 30161953. The next prime is 30161959. The reversal of 30161955 is 55916103.

It is not a de Polignac number, because 30161955 - 2¹ = 30161953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30161953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16392 + ... + 18138.

It is an arithmetic number, because the mean of its divisors is an integer number (3020544).

Almost surely, 2^30161955 is an apocalyptic number.

30161955 is a deficient number, since it is larger than the sum of its proper divisors (18166749).

30161955 is a wasteful number, since it uses less digits than its factorization.

30161955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 30161955 is about 5491.9900764659. The cubic root of 30161955 is about 311.2813939076.

The spelling of 30161955 in words is "thirty million, one hundred sixty-one thousand, nine hundred fifty-five".