74155161 has 8 divisors (see below), whose sum is σ = 99371200. Its totient is φ = 49187952.

The previous prime is 74155129. The next prime is 74155163. The reversal of 74155161 is 16155147.

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

It is not a de Polignac number, because 74155161 - 2⁵ = 74155129 is a prime.

It is a super-3 number, since 3×74155161³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74155163) 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, 61510 + ... + 62703.

It is an arithmetic number, because the mean of its divisors is an integer number (12421400).

Almost surely, 2^74155161 is an apocalyptic number.

It is an amenable number.

74155161 is a deficient number, since it is larger than the sum of its proper divisors (25216039).

74155161 is a wasteful number, since it uses less digits than its factorization.

74155161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124415.

The product of its digits is 4200, while the sum is 30.

The square root of 74155161 is about 8611.3390944731. The cubic root of 74155161 is about 420.1268721019.

The spelling of 74155161 in words is "seventy-four million, one hundred fifty-five thousand, one hundred sixty-one".