155270266 has 4 divisors (see below), whose sum is σ = 232905402. Its totient is φ = 77635132.

The previous prime is 155270257. The next prime is 155270267. The reversal of 155270266 is 662072551.

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

It can be written as a sum of positive squares in only one way, i.e., 153239641 + 2030625 = 12379^2 + 1425^2 .

It is not an unprimeable number, because it can be changed into a prime (155270267) 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 as a sum of consecutive naturals, namely, 38817565 + ... + 38817568.

Almost surely, 2^155270266 is an apocalyptic number.

155270266 is a deficient number, since it is larger than the sum of its proper divisors (77635136).

155270266 is an equidigital number, since it uses as much as digits as its factorization.

155270266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77635135.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 155270266 is about 12460.7490144052. The cubic root of 155270266 is about 537.4805658017.

The spelling of 155270266 in words is "one hundred fifty-five million, two hundred seventy thousand, two hundred sixty-six".