52545993 has 4 divisors (see below), whose sum is σ = 70061328. Its totient is φ = 35030660.

The previous prime is 52545989. The next prime is 52546003. The reversal of 52545993 is 39954525.

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 52545993 - 2² = 52545989 is a prime.

It is a super-2 number, since 2×52545993² = 5522162760712098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52545943) 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, 8757663 + ... + 8757668.

It is an arithmetic number, because the mean of its divisors is an integer number (17515332).

Almost surely, 2^52545993 is an apocalyptic number.

It is an amenable number.

52545993 is a deficient number, since it is larger than the sum of its proper divisors (17515335).

52545993 is a wasteful number, since it uses less digits than its factorization.

52545993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17515334.

The product of its digits is 243000, while the sum is 42.

The square root of 52545993 is about 7248.8614968145. The cubic root of 52545993 is about 374.5529321148.

The spelling of 52545993 in words is "fifty-two million, five hundred forty-five thousand, nine hundred ninety-three".