53509238 has 4 divisors (see below), whose sum is σ = 80263860. Its totient is φ = 26754618.

The previous prime is 53509237. The next prime is 53509241. The reversal of 53509238 is 83290535.

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

It is a junction number, because it is equal to n+sod(n) for n = 53509198 and 53509207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53509231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13377308 + ... + 13377311.

It is an arithmetic number, because the mean of its divisors is an integer number (20065965).

Almost surely, 2^53509238 is an apocalyptic number.

53509238 is a deficient number, since it is larger than the sum of its proper divisors (26754622).

53509238 is a wasteful number, since it uses less digits than its factorization.

53509238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26754621.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 53509238 is about 7315.0008885850. Note that the first 3 decimals coincide. The cubic root of 53509238 is about 376.8277889885.

The spelling of 53509238 in words is "fifty-three million, five hundred nine thousand, two hundred thirty-eight".