53688207 has 4 divisors (see below), whose sum is σ = 71584280. Its totient is φ = 35792136.

The previous prime is 53688199. The next prime is 53688211. The reversal of 53688207 is 70288635.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53688207 - 2³ = 53688199 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53688287) 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, 8948032 + ... + 8948037.

It is an arithmetic number, because the mean of its divisors is an integer number (17896070).

Almost surely, 2^53688207 is an apocalyptic number.

53688207 is a deficient number, since it is larger than the sum of its proper divisors (17896073).

53688207 is a wasteful number, since it uses less digits than its factorization.

53688207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17896072.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 53688207 is about 7327.2236897750. The cubic root of 53688207 is about 377.2474389187.

The spelling of 53688207 in words is "fifty-three million, six hundred eighty-eight thousand, two hundred seven".