52109993 has 4 divisors (see below), whose sum is σ = 56118468. Its totient is φ = 48101520.

The previous prime is 52109983. The next prime is 52110001. The reversal of 52109993 is 39990125.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28761769 + 23348224 = 5363^2 + 4832^2 .

It is a cyclic number.

It is not a de Polignac number, because 52109993 - 2⁶ = 52109929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52109923) 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, 2004218 + ... + 2004243.

It is an arithmetic number, because the mean of its divisors is an integer number (14029617).

Almost surely, 2^52109993 is an apocalyptic number.

It is an amenable number.

52109993 is a deficient number, since it is larger than the sum of its proper divisors (4008475).

52109993 is a wasteful number, since it uses less digits than its factorization.

52109993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008474.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 52109993 is about 7218.7251644594. The cubic root of 52109993 is about 373.5141034813.

The spelling of 52109993 in words is "fifty-two million, one hundred nine thousand, nine hundred ninety-three".