155315804 has 48 divisors (see below), whose sum is σ = 329521920. Its totient is φ = 62570880.

The previous prime is 155315773. The next prime is 155315807. The reversal of 155315804 is 408513551.

155315804 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155315807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71819 + ... + 73949.

It is an arithmetic number, because the mean of its divisors is an integer number (6865040).

Almost surely, 2^155315804 is an apocalyptic number.

155315804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155315804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164760960).

155315804 is an abundant number, since it is smaller than the sum of its proper divisors (174206116).

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

155315804 is a wasteful number, since it uses less digits than its factorization.

155315804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298 (or 2296 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 155315804 is about 12462.5761381827. The cubic root of 155315804 is about 537.5331051541.

The spelling of 155315804 in words is "one hundred fifty-five million, three hundred fifteen thousand, eight hundred four".