155878267 has 2 divisors, whose sum is σ = 155878268. Its totient is φ = 155878266.

The previous prime is 155878231. The next prime is 155878309. The reversal of 155878267 is 762878551.

155878267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (762878551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155878267 - 2¹⁵ = 155845499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155878267.

It is not a weakly prime, because it can be changed into another prime (155848267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77939133 + 77939134.

It is an arithmetic number, because the mean of its divisors is an integer number (77939134).

Almost surely, 2^155878267 is an apocalyptic number.

155878267 is a deficient number, since it is larger than the sum of its proper divisors (1).

155878267 is an equidigital number, since it uses as much as digits as its factorization.

155878267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 49.

The square root of 155878267 is about 12485.1218255971. The cubic root of 155878267 is about 538.1812002791.

The spelling of 155878267 in words is "one hundred fifty-five million, eight hundred seventy-eight thousand, two hundred sixty-seven".