53690409 has 12 divisors (see below), whose sum is σ = 81634800. Its totient is φ = 33909624.

The previous prime is 53690387. The next prime is 53690411. The reversal of 53690409 is 90409635.

It is not a de Polignac number, because 53690409 - 2¹⁶ = 53624873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53690449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156819 + ... + 157160.

It is an arithmetic number, because the mean of its divisors is an integer number (6802900).

Almost surely, 2^53690409 is an apocalyptic number.

It is an amenable number.

53690409 is a deficient number, since it is larger than the sum of its proper divisors (27944391).

53690409 is a wasteful number, since it uses less digits than its factorization.

53690409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314004 (or 314001 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 53690409 is about 7327.3739497858. The cubic root of 53690409 is about 377.2525963983.

The spelling of 53690409 in words is "fifty-three million, six hundred ninety thousand, four hundred nine".