155323087 has 2 divisors, whose sum is σ = 155323088. Its totient is φ = 155323086.

The previous prime is 155323037. The next prime is 155323097. The reversal of 155323087 is 780323551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155323087 - 2¹¹ = 155321039 is a prime.

It is a super-2 number, since 2×155323087² = 48250522710419138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155323037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77661543 + 77661544.

It is an arithmetic number, because the mean of its divisors is an integer number (77661544).

Almost surely, 2^155323087 is an apocalyptic number.

155323087 is a deficient number, since it is larger than the sum of its proper divisors (1).

155323087 is an equidigital number, since it uses as much as digits as its factorization.

155323087 is an evil number, because the sum of its binary digits is even.

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

The square root of 155323087 is about 12462.8683295620. The cubic root of 155323087 is about 537.5415069443.

The spelling of 155323087 in words is "one hundred fifty-five million, three hundred twenty-three thousand, eighty-seven".