97135405 has 4 divisors (see below), whose sum is σ = 116562492. Its totient is φ = 77708320.

The previous prime is 97135393. The next prime is 97135411. The reversal of 97135405 is 50453179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50453179 = 7 ⋅7207597.

It can be written as a sum of positive squares in 2 ways, for example, as 72948681 + 24186724 = 8541^2 + 4918^2 .

It is not a de Polignac number, because 97135405 - 2⁵ = 97135373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713536 + ... + 9713545.

It is an arithmetic number, because the mean of its divisors is an integer number (29140623).

Almost surely, 2^97135405 is an apocalyptic number.

It is an amenable number.

97135405 is a deficient number, since it is larger than the sum of its proper divisors (19427087).

97135405 is a wasteful number, since it uses less digits than its factorization.

97135405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19427086.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 97135405 is about 9855.7295518901. The cubic root of 97135405 is about 459.6837855123.

The spelling of 97135405 in words is "ninety-seven million, one hundred thirty-five thousand, four hundred five".