154439252 has 12 divisors (see below), whose sum is σ = 294838656. Its totient is φ = 70199640.

The previous prime is 154439213. The next prime is 154439261. The reversal of 154439252 is 252934451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754948 + ... + 1755035.

It is an arithmetic number, because the mean of its divisors is an integer number (24569888).

Almost surely, 2^154439252 is an apocalyptic number.

It is an amenable number.

154439252 is a deficient number, since it is larger than the sum of its proper divisors (140399404).

154439252 is a wasteful number, since it uses less digits than its factorization.

154439252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509998 (or 3509996 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 154439252 is about 12427.3590114714. The cubic root of 154439252 is about 536.5199760251.

The spelling of 154439252 in words is "one hundred fifty-four million, four hundred thirty-nine thousand, two hundred fifty-two".