135525023 has 4 divisors (see below), whose sum is σ = 136791720. Its totient is φ = 134258328.

The previous prime is 135524959. The next prime is 135525073. The reversal of 135525023 is 320525531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320525531 = 17 ⋅18854443.

It is a cyclic number.

It is not a de Polignac number, because 135525023 - 2⁶ = 135524959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135524983 and 135525001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135525073) 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, 633188 + ... + 633401.

It is an arithmetic number, because the mean of its divisors is an integer number (34197930).

Almost surely, 2^135525023 is an apocalyptic number.

135525023 is a deficient number, since it is larger than the sum of its proper divisors (1266697).

135525023 is a wasteful number, since it uses less digits than its factorization.

135525023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266696.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 135525023 is about 11641.5215070883. The cubic root of 135525023 is about 513.6569435392.

The spelling of 135525023 in words is "one hundred thirty-five million, five hundred twenty-five thousand, twenty-three".