52523665 has 16 divisors (see below), whose sum is σ = 64982736. Its totient is φ = 40729600.

The previous prime is 52523633. The next prime is 52523711. The reversal of 52523665 is 56632525.

It can be written as a sum of positive squares in 8 ways, for example, as 1157776 + 51365889 = 1076^2 + 7167^2 .

It is not a de Polignac number, because 52523665 - 2⁵ = 52523633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52523665.

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 15 ways as a sum of consecutive naturals, for example, 34725 + ... + 36205.

It is an arithmetic number, because the mean of its divisors is an integer number (4061421).

Almost surely, 2^52523665 is an apocalyptic number.

It is an amenable number.

52523665 is a deficient number, since it is larger than the sum of its proper divisors (12459071).

52523665 is a wasteful number, since it uses less digits than its factorization.

52523665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its digits is 54000, while the sum is 34.

The square root of 52523665 is about 7247.3212292543. The cubic root of 52523665 is about 374.4998725492.

The spelling of 52523665 in words is "fifty-two million, five hundred twenty-three thousand, six hundred sixty-five".