52545813 has 16 divisors (see below), whose sum is σ = 71554560. Its totient is φ = 34289136.

The previous prime is 52545799. The next prime is 52545841. The reversal of 52545813 is 31854525.

It is not a de Polignac number, because 52545813 - 2⁴ = 52545797 is a prime.

It is a super-2 number, since 2×52545813² = 5522124927661938, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52545853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53856 + ... + 54822.

It is an arithmetic number, because the mean of its divisors is an integer number (4472160).

Almost surely, 2^52545813 is an apocalyptic number.

It is an amenable number.

52545813 is a deficient number, since it is larger than the sum of its proper divisors (19008747).

52545813 is a wasteful number, since it uses less digits than its factorization.

52545813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its digits is 24000, while the sum is 33.

The square root of 52545813 is about 7248.8490810611. The cubic root of 52545813 is about 374.5525044285.

The spelling of 52545813 in words is "fifty-two million, five hundred forty-five thousand, eight hundred thirteen".