155273207 has 4 divisors (see below), whose sum is σ = 162024240. Its totient is φ = 148522176.

The previous prime is 155273159. The next prime is 155273231. The reversal of 155273207 is 702372551.

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 155273207 - 2⁶ = 155273143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155273407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3375482 + ... + 3375527.

It is an arithmetic number, because the mean of its divisors is an integer number (40506060).

Almost surely, 2^155273207 is an apocalyptic number.

155273207 is a deficient number, since it is larger than the sum of its proper divisors (6751033).

155273207 is an equidigital number, since it uses as much as digits as its factorization.

155273207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6751032.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 155273207 is about 12460.8670244089. The cubic root of 155273207 is about 537.4839592833.

The spelling of 155273207 in words is "one hundred fifty-five million, two hundred seventy-three thousand, two hundred seven".