53903013 has 4 divisors (see below), whose sum is σ = 71870688. Its totient is φ = 35935340.

The previous prime is 53903011. The next prime is 53903023. The reversal of 53903013 is 31030935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53903013 - 2¹ = 53903011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53903011) 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, 8983833 + ... + 8983838.

It is an arithmetic number, because the mean of its divisors is an integer number (17967672).

Almost surely, 2^53903013 is an apocalyptic number.

It is an amenable number.

53903013 is a deficient number, since it is larger than the sum of its proper divisors (17967675).

53903013 is a wasteful number, since it uses less digits than its factorization.

53903013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17967674.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 53903013 is about 7341.8671330936. The cubic root of 53903013 is about 377.7498905372.

Adding to 53903013 its reverse (31030935), we get a palindrome (84933948).

The spelling of 53903013 in words is "fifty-three million, nine hundred three thousand, thirteen".