155427995 has 4 divisors (see below), whose sum is σ = 186513600. Its totient is φ = 124342392.

The previous prime is 155427983. The next prime is 155428019. The reversal of 155427995 is 599724551.

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 155427995 - 2¹⁴ = 155411611 is a prime.

It is an unprimeable number.

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, 15542795 + ... + 15542804.

It is an arithmetic number, because the mean of its divisors is an integer number (46628400).

Almost surely, 2^155427995 is an apocalyptic number.

155427995 is a deficient number, since it is larger than the sum of its proper divisors (31085605).

155427995 is an equidigital number, since it uses as much as digits as its factorization.

155427995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31085604.

The product of its digits is 567000, while the sum is 47.

The square root of 155427995 is about 12467.0764415720. The cubic root of 155427995 is about 537.6625014341.

The spelling of 155427995 in words is "one hundred fifty-five million, four hundred twenty-seven thousand, nine hundred ninety-five".