155040204 has 96 divisors (see below), whose sum is σ = 422053632. Its totient is φ = 44140800.

The previous prime is 155040191. The next prime is 155040227. The reversal of 155040204 is 402040551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271239 + ... + 271809.

It is an arithmetic number, because the mean of its divisors is an integer number (4396392).

Almost surely, 2^155040204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155040204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211026816).

155040204 is an abundant number, since it is smaller than the sum of its proper divisors (267013428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155040204 is a wasteful number, since it uses less digits than its factorization.

155040204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 155040204 is about 12451.5141247962. The cubic root of 155040204 is about 537.2149751866.

Adding to 155040204 its reverse (402040551), we get a palindrome (557080755).

The spelling of 155040204 in words is "one hundred fifty-five million, forty thousand, two hundred four".