135402511 has 4 divisors (see below), whose sum is σ = 137423512. Its totient is φ = 133381512.

The previous prime is 135402503. The next prime is 135402521. The reversal of 135402511 is 115204531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115204531 = 13 ⋅8861887.

It is a cyclic number.

It is not a de Polignac number, because 135402511 - 2³ = 135402503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135402521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010400 + ... + 1010533.

It is an arithmetic number, because the mean of its divisors is an integer number (34355878).

Almost surely, 2^135402511 is an apocalyptic number.

135402511 is a deficient number, since it is larger than the sum of its proper divisors (2021001).

135402511 is an equidigital number, since it uses as much as digits as its factorization.

135402511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021000.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 135402511 is about 11636.2584622378. The cubic root of 135402511 is about 513.5021182289.

The spelling of 135402511 in words is "one hundred thirty-five million, four hundred two thousand, five hundred eleven".