155875830 has 96 divisors (see below), whose sum is σ = 429311232. Its totient is φ = 36125760.

The previous prime is 155875823. The next prime is 155875831. The reversal of 155875830 is 38578551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155875831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82557 + ... + 84423.

It is an arithmetic number, because the mean of its divisors is an integer number (4471992).

Almost surely, 2^155875830 is an apocalyptic number.

155875830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155875830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214655616).

155875830 is an abundant number, since it is smaller than the sum of its proper divisors (273435402).

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

155875830 is a wasteful number, since it uses less digits than its factorization.

155875830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 42.

The square root of 155875830 is about 12485.0242290514. The cubic root of 155875830 is about 538.1783956238.

The spelling of 155875830 in words is "one hundred fifty-five million, eight hundred seventy-five thousand, eight hundred thirty".