135601651 has 16 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 123530400.

The previous prime is 135601649. The next prime is 135601667. The reversal of 135601651 is 156106531.

135601651 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 135601651 - 2¹ = 135601649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135601621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237196 + ... + 237766.

It is an arithmetic number, because the mean of its divisors is an integer number (9266400).

Almost surely, 2^135601651 is an apocalyptic number.

135601651 is a deficient number, since it is larger than the sum of its proper divisors (12660749).

135601651 is a wasteful number, since it uses less digits than its factorization.

135601651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 135601651 is about 11644.8121925603. The cubic root of 135601651 is about 513.7537352298.

The spelling of 135601651 in words is "one hundred thirty-five million, six hundred one thousand, six hundred fifty-one".