155815488 has 168 divisors, whose sum is σ = 475963488. Its totient is φ = 50512896.

The previous prime is 155815487. The next prime is 155815553. The reversal of 155815488 is 884518551.

155815488 is a `hidden beast` number, since 1 + 558 + 15 + 4 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (155815487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 668620 + ... + 668852.

It is an arithmetic number, because the mean of its divisors is an integer number (2833116).

Almost surely, 2^155815488 is an apocalyptic number.

155815488 is a gapful number since it is divisible by the number (18) 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 155815488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237981744).

155815488 is an abundant number, since it is smaller than the sum of its proper divisors (320148000).

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

155815488 is an equidigital number, since it uses as much as digits as its factorization.

155815488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 281 counting only the distinct ones).

The product of its digits is 256000, while the sum is 45.

The square root of 155815488 is about 12482.6074199263. The cubic root of 155815488 is about 538.1089408701.

The spelling of 155815488 in words is "one hundred fifty-five million, eight hundred fifteen thousand, four hundred eighty-eight".