52640727 has 4 divisors (see below), whose sum is σ = 70187640. Its totient is φ = 35093816.

The previous prime is 52640723. The next prime is 52640747. The reversal of 52640727 is 72704625.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52640727 - 2² = 52640723 is a prime.

It is a super-2 number, since 2×52640727² = 5542092278177058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640723) 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, 8773452 + ... + 8773457.

It is an arithmetic number, because the mean of its divisors is an integer number (17546910).

Almost surely, 2^52640727 is an apocalyptic number.

52640727 is a deficient number, since it is larger than the sum of its proper divisors (17546913).

52640727 is a wasteful number, since it uses less digits than its factorization.

52640727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17546912.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 52640727 is about 7255.3929597231. The cubic root of 52640727 is about 374.7778880249. Note that the first 3 decimals are identical.

The spelling of 52640727 in words is "fifty-two million, six hundred forty thousand, seven hundred twenty-seven".