155297088 has 140 divisors (see below), whose sum is σ = 476684340. Its totient is φ = 49932288.

The previous prime is 155297047. The next prime is 155297101. The reversal of 155297088 is 880792551.

It is a happy number.

155297088 is a `hidden beast` number, since 1 + 552 + 97 + 0 + 8 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122943744 + 32353344 = 11088^2 + 5688^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 149820 + ... + 150852.

Almost surely, 2^155297088 is an apocalyptic number.

155297088 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 155297088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238342170).

155297088 is an abundant number, since it is smaller than the sum of its proper divisors (321387252).

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

155297088 is a wasteful number, since it uses less digits than its factorization.

155297088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 155297088 is about 12461.8252274697. The cubic root of 155297088 is about 537.5115128596.

The spelling of 155297088 in words is "one hundred fifty-five million, two hundred ninety-seven thousand, eighty-eight".