161254049 has 8 divisors (see below), whose sum is σ = 178798080. Its totient is φ = 144190800.

The previous prime is 161254043. The next prime is 161254063. The reversal of 161254049 is 940452161.

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 161254049 - 2⁸ = 161253793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161254043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119489 + ... + 120830.

It is an arithmetic number, because the mean of its divisors is an integer number (22349760).

Almost surely, 2^161254049 is an apocalyptic number.

It is an amenable number.

161254049 is a deficient number, since it is larger than the sum of its proper divisors (17544031).

161254049 is a wasteful number, since it uses less digits than its factorization.

161254049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240391.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 161254049 is about 12698.5845274188. The cubic root of 161254049 is about 544.2981724400.

The spelling of 161254049 in words is "one hundred sixty-one million, two hundred fifty-four thousand, forty-nine".