135290087 has 2 divisors, whose sum is σ = 135290088. Its totient is φ = 135290086.

The previous prime is 135290047. The next prime is 135290123. The reversal of 135290087 is 780092531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135290087 - 2⁸ = 135289831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135290027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67645043 + 67645044.

It is an arithmetic number, because the mean of its divisors is an integer number (67645044).

Almost surely, 2^135290087 is an apocalyptic number.

135290087 is a deficient number, since it is larger than the sum of its proper divisors (1).

135290087 is an equidigital number, since it uses as much as digits as its factorization.

135290087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 135290087 is about 11631.4266966697. The cubic root of 135290087 is about 513.3599594986.

The spelling of 135290087 in words is "one hundred thirty-five million, two hundred ninety thousand, eighty-seven".