155869488 has 160 divisors (see below), whose sum is σ = 470446080. Its totient is φ = 49351680.

The previous prime is 155869471. The next prime is 155869489. The reversal of 155869488 is 884968551.

It is a happy number.

155869488 is a `hidden beast` number, since 1 + 558 + 6 + 9 + 4 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (155869489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1379320 + ... + 1379432.

It is an arithmetic number, because the mean of its divisors is an integer number (2940288).

Almost surely, 2^155869488 is an apocalyptic number.

155869488 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 155869488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235223040).

155869488 is an abundant number, since it is smaller than the sum of its proper divisors (314576592).

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

155869488 is a wasteful number, since it uses less digits than its factorization.

155869488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 155869488 is about 12484.7702421791. The cubic root of 155869488 is about 538.1710967080.

The spelling of 155869488 in words is "one hundred fifty-five million, eight hundred sixty-nine thousand, four hundred eighty-eight".