155585552 has 10 divisors (see below), whose sum is σ = 301447038. Its totient is φ = 77792768.

The previous prime is 155585543. The next prime is 155585569. The reversal of 155585552 is 255585551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 155351296 + 234256 = 12464^2 + 484^2 .

It is a super-2 number, since 2×155585552² = 48413727982289408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4862033 + ... + 4862064.

Almost surely, 2^155585552 is an apocalyptic number.

It is an amenable number.

155585552 is a deficient number, since it is larger than the sum of its proper divisors (145861486).

155585552 is an equidigital number, since it uses as much as digits as its factorization.

155585552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9724105 (or 9724099 counting only the distinct ones).

The product of its digits is 250000, while the sum is 41.

The square root of 155585552 is about 12473.3937643289. The cubic root of 155585552 is about 537.8441158264.

Subtracting 155585552 from its reverse (255585551), we obtain a palindrome (99999999).

The spelling of 155585552 in words is "one hundred fifty-five million, five hundred eighty-five thousand, five hundred fifty-two".