155530512 has 30 divisors (see below), whose sum is σ = 435269822. Its totient is φ = 51843456.

The previous prime is 155530511. The next prime is 155530537. The reversal of 155530512 is 215035551.

It can be written as a sum of positive squares in only one way, i.e., 146313216 + 9217296 = 12096^2 + 3036^2 .

It is not an unprimeable number, because it can be changed into a prime (155530511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 539893 + ... + 540180.

Almost surely, 2^155530512 is an apocalyptic number.

155530512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155530512 is an abundant number, since it is smaller than the sum of its proper divisors (279739310).

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

155530512 is a wasteful number, since it uses less digits than its factorization.

155530512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080087 (or 1080078 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 155530512 is about 12471.1872730707. The cubic root of 155530512 is about 537.7806857045.

The spelling of 155530512 in words is "one hundred fifty-five million, five hundred thirty thousand, five hundred twelve".