135657415 has 4 divisors (see below), whose sum is σ = 162788904. Its totient is φ = 108525928.

The previous prime is 135657413. The next prime is 135657437. The reversal of 135657415 is 514756531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514756531 = 19 ⋅27092449.

It is a cyclic number.

It is not a de Polignac number, because 135657415 - 2¹ = 135657413 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 (135657413) 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, 13565737 + ... + 13565746.

It is an arithmetic number, because the mean of its divisors is an integer number (40697226).

Almost surely, 2^135657415 is an apocalyptic number.

135657415 is a deficient number, since it is larger than the sum of its proper divisors (27131489).

135657415 is an equidigital number, since it uses as much as digits as its factorization.

135657415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27131488.

The product of its digits is 63000, while the sum is 37.

The square root of 135657415 is about 11647.2063173965. The cubic root of 135657415 is about 513.8241499011.

The spelling of 135657415 in words is "one hundred thirty-five million, six hundred fifty-seven thousand, four hundred fifteen".