135806451 has 32 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 80371200.

The previous prime is 135806423. The next prime is 135806459. The reversal of 135806451 is 154608531.

135806451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135806451 - 2²¹ = 133709299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (135806459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294361 + ... + 294821.

It is an arithmetic number, because the mean of its divisors is an integer number (6320160).

Almost surely, 2^135806451 is an apocalyptic number.

135806451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135806451 is a deficient number, since it is larger than the sum of its proper divisors (66438669).

135806451 is a wasteful number, since it uses less digits than its factorization.

135806451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 135806451 is about 11653.6024902173. The cubic root of 135806451 is about 514.0122469287.

The spelling of 135806451 in words is "one hundred thirty-five million, eight hundred six thousand, four hundred fifty-one".