155290512 has 80 divisors (see below), whose sum is σ = 457470720. Its totient is φ = 44967936.

The previous prime is 155290511. The next prime is 155290559. The reversal of 155290512 is 215092551.

It is a self number, because there is not a number n which added to its sum of digits gives 155290512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155290511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3289 + ... + 17927.

It is an arithmetic number, because the mean of its divisors is an integer number (5718384).

Almost surely, 2^155290512 is an apocalyptic number.

155290512 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 155290512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228735360).

155290512 is an abundant number, since it is smaller than the sum of its proper divisors (302180208).

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

155290512 is a wasteful number, since it uses less digits than its factorization.

155290512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14680 (or 14674 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 155290512 is about 12461.5613788963. The cubic root of 155290512 is about 537.5039258412.

The spelling of 155290512 in words is "one hundred fifty-five million, two hundred ninety thousand, five hundred twelve".