52736645 has 32 divisors (see below), whose sum is σ = 71457120. Its totient is φ = 37094400.

The previous prime is 52736633. The next prime is 52736653. The reversal of 52736645 is 54663725.

It is a Cunningham number, because it is equal to 7262²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 13586596 + 39150049 = 3686^2 + 6257^2 .

It is not a de Polignac number, because 52736645 - 2¹⁶ = 52671109 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 52736599 and 52736608.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 190247 + ... + 190523.

It is an arithmetic number, because the mean of its divisors is an integer number (2233035).

Almost surely, 2^52736645 is an apocalyptic number.

It is an amenable number.

52736645 is a deficient number, since it is larger than the sum of its proper divisors (18720475).

52736645 is a wasteful number, since it uses less digits than its factorization.

52736645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its digits is 151200, while the sum is 38.

The square root of 52736645 is about 7262.0000688516. Note that the first 4 decimals coincide. The cubic root of 52736645 is about 375.0053806635.

The spelling of 52736645 in words is "fifty-two million, seven hundred thirty-six thousand, six hundred forty-five".