53325813 has 4 divisors (see below), whose sum is σ = 71101088. Its totient is φ = 35550540.

The previous prime is 53325803. The next prime is 53325817. The reversal of 53325813 is 31852335.

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 53325813 - 2⁶ = 53325749 is a prime.

It is a super-2 number, since 2×53325813² = 5687284664221938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53325817) 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, 8887633 + ... + 8887638.

It is an arithmetic number, because the mean of its divisors is an integer number (17775272).

Almost surely, 2^53325813 is an apocalyptic number.

It is an amenable number.

53325813 is a deficient number, since it is larger than the sum of its proper divisors (17775275).

53325813 is a wasteful number, since it uses less digits than its factorization.

53325813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17775274.

The product of its digits is 10800, while the sum is 30.

The square root of 53325813 is about 7302.4525332247. The cubic root of 53325813 is about 376.3967184592.

The spelling of 53325813 in words is "fifty-three million, three hundred twenty-five thousand, eight hundred thirteen".