155526380 has 48 divisors (see below), whose sum is σ = 343574784. Its totient is φ = 59055360.

The previous prime is 155526379. The next prime is 155526401. The reversal of 155526380 is 83625551.

It is a self number, because there is not a number n which added to its sum of digits gives 155526380.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30494 + ... + 35226.

It is an arithmetic number, because the mean of its divisors is an integer number (7157808).

Almost surely, 2^155526380 is an apocalyptic number.

155526380 is a gapful number since it is divisible by the number (10) 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 155526380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171787392).

155526380 is an abundant number, since it is smaller than the sum of its proper divisors (188048404).

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

155526380 is a wasteful number, since it uses less digits than its factorization.

155526380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826 (or 4824 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 155526380 is about 12471.0216101168. The cubic root of 155526380 is about 537.7759232317.

The spelling of 155526380 in words is "one hundred fifty-five million, five hundred twenty-six thousand, three hundred eighty".