155317152 has 48 divisors (see below), whose sum is σ = 411475680. Its totient is φ = 51293952.

The previous prime is 155317121. The next prime is 155317207. The reversal of 155317152 is 251713551.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×155317152² = 48246835410782208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3043 + ... + 17885.

It is an arithmetic number, because the mean of its divisors is an integer number (8572410).

Almost surely, 2^155317152 is an apocalyptic number.

155317152 is a gapful number since it is divisible by the number (12) 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 155317152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205737840).

155317152 is an abundant number, since it is smaller than the sum of its proper divisors (256158528).

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

155317152 is a wasteful number, since it uses less digits than its factorization.

155317152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14965 (or 14957 counting only the distinct ones).

The product of its digits is 5250, while the sum is 30.

The square root of 155317152 is about 12462.6302199817. The cubic root of 155317152 is about 537.5346602491.

The spelling of 155317152 in words is "one hundred fifty-five million, three hundred seventeen thousand, one hundred fifty-two".