155255207 has 2 divisors, whose sum is σ = 155255208. Its totient is φ = 155255206.

The previous prime is 155255201. The next prime is 155255209. The reversal of 155255207 is 702552551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155255207 - 2⁶ = 155255143 is a prime.

It is a super-2 number, since 2×155255207² = 48208358601225698, which contains 22 as substring.

Together with 155255209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155255201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77627603 + 77627604.

It is an arithmetic number, because the mean of its divisors is an integer number (77627604).

Almost surely, 2^155255207 is an apocalyptic number.

155255207 is a deficient number, since it is larger than the sum of its proper divisors (1).

155255207 is an equidigital number, since it uses as much as digits as its factorization.

155255207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 155255207 is about 12460.1447423375. The cubic root of 155255207 is about 537.4631892584.

The spelling of 155255207 in words is "one hundred fifty-five million, two hundred fifty-five thousand, two hundred seven".