154879881 has 12 divisors (see below), whose sum is σ = 223614288. Its totient is φ = 95310384.

The previous prime is 154879873. The next prime is 154879903. The reversal of 154879881 is 188978451.

It is a happy number.

154879881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154879881 - 2³ = 154879873 is a prime.

It is a super-2 number, since 2×154879881² = 47975555077148322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154879831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152235 + ... + 153248.

It is an arithmetic number, because the mean of its divisors is an integer number (18634524).

Almost surely, 2^154879881 is an apocalyptic number.

It is an amenable number.

154879881 is a deficient number, since it is larger than the sum of its proper divisors (68734407).

154879881 is a wasteful number, since it uses less digits than its factorization.

154879881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305512 (or 305499 counting only the distinct ones).

The product of its digits is 645120, while the sum is 51.

The square root of 154879881 is about 12445.0745678762. The cubic root of 154879881 is about 537.0297380270.

The spelling of 154879881 in words is "one hundred fifty-four million, eight hundred seventy-nine thousand, eight hundred eighty-one".