155087 has 2 divisors, whose sum is σ = 155088. Its totient is φ = 155086.

The previous prime is 155083. The next prime is 155119. The reversal of 155087 is 780551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155087 - 2² = 155083 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77543 + 77544.

It is an arithmetic number, because the mean of its divisors is an integer number (77544).

2¹⁵⁵⁰⁸⁷ is an apocalyptic number.

155087 is a deficient number, since it is larger than the sum of its proper divisors (1).

155087 is an equidigital number, since it uses as much as digits as its factorization.

155087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 155087 is about 393.8108683112. The cubic root of 155087 is about 53.7269019197.

The spelling of 155087 in words is "one hundred fifty-five thousand, eighty-seven".