155597027 has 4 divisors (see below), whose sum is σ = 156276720. Its totient is φ = 154917336.

The previous prime is 155597011. The next prime is 155597041. The reversal of 155597027 is 720795551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155597027 - 2⁴ = 155597011 is a prime.

It is a super-2 number, since 2×155597027² = 48420869622477458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155597077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339503 + ... + 339960.

It is an arithmetic number, because the mean of its divisors is an integer number (39069180).

Almost surely, 2^155597027 is an apocalyptic number.

155597027 is a deficient number, since it is larger than the sum of its proper divisors (679693).

155597027 is an equidigital number, since it uses as much as digits as its factorization.

155597027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679692.

The product of its (nonzero) digits is 110250, while the sum is 41.

The square root of 155597027 is about 12473.8537349129. The cubic root of 155597027 is about 537.8573381542.

The spelling of 155597027 in words is "one hundred fifty-five million, five hundred ninety-seven thousand, twenty-seven".