154889 has 12 divisors (see below), whose sum is σ = 188100. Its totient is φ = 127008.

The previous prime is 154883. The next prime is 154897. The reversal of 154889 is 988451.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 60025 = 308^2 + 245^2 .

It is not a de Polignac number, because 154889 - 2⁴ = 154873 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 154889.

It is not an unprimeable number, because it can be changed into a prime (154883) 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, 1367 + ... + 1475.

It is an arithmetic number, because the mean of its divisors is an integer number (15675).

2¹⁵⁴⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

154889 is a deficient number, since it is larger than the sum of its proper divisors (33211).

154889 is a wasteful number, since it uses less digits than its factorization.

154889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 145 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 154889 is about 393.5593983124. The cubic root of 154889 is about 53.7040277545.

The spelling of 154889 in words is "one hundred fifty-four thousand, eight hundred eighty-nine".