53001813 has 4 divisors (see below), whose sum is σ = 70669088. Its totient is φ = 35334540.

The previous prime is 53001803. The next prime is 53001827. The reversal of 53001813 is 31810035.

It is a happy number.

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 not a de Polignac number, because 53001813 - 2¹⁰ = 53000789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53001813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53001803) 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, 8833633 + ... + 8833638.

It is an arithmetic number, because the mean of its divisors is an integer number (17667272).

Almost surely, 2^53001813 is an apocalyptic number.

It is an amenable number.

53001813 is a deficient number, since it is larger than the sum of its proper divisors (17667275).

53001813 is a wasteful number, since it uses less digits than its factorization.

53001813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17667274.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 53001813 is about 7280.2344055669. The cubic root of 53001813 is about 375.6328584840.

Adding to 53001813 its reverse (31810035), we get a palindrome (84811848).

The spelling of 53001813 in words is "fifty-three million, one thousand, eight hundred thirteen".