52640565 has 8 divisors (see below), whose sum is σ = 84224928. Its totient is φ = 28074960.

The previous prime is 52640543. The next prime is 52640587. The reversal of 52640565 is 56504625.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (52640543) and next prime (52640587).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52640565 - 2⁷ = 52640437 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754671 + ... + 1754700.

It is an arithmetic number, because the mean of its divisors is an integer number (10528116).

Almost surely, 2^52640565 is an apocalyptic number.

It is an amenable number.

52640565 is a deficient number, since it is larger than the sum of its proper divisors (31584363).

52640565 is a wasteful number, since it uses less digits than its factorization.

52640565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509379.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 52640565 is about 7255.3817956052. The cubic root of 52640565 is about 374.7775035692. Note that the first 3 decimals are identical.

The spelling of 52640565 in words is "fifty-two million, six hundred forty thousand, five hundred sixty-five".