52640829 has 24 divisors (see below), whose sum is σ = 79279200. Its totient is φ = 33616800.

The previous prime is 52640827. The next prime is 52640839. The reversal of 52640829 is 92804625.

It is a happy number.

52640829 is a `hidden beast` number, since 5 + 2 + 640 + 8 + 2 + 9 = 666.

It is not a de Polignac number, because 52640829 - 2¹ = 52640827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52640793 and 52640802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52640827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35554 + ... + 37004.

It is an arithmetic number, because the mean of its divisors is an integer number (3303300).

Almost surely, 2^52640829 is an apocalyptic number.

It is an amenable number.

52640829 is a deficient number, since it is larger than the sum of its proper divisors (26638371).

52640829 is a wasteful number, since it uses less digits than its factorization.

52640829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 52640829 is about 7255.3999889737. The cubic root of 52640829 is about 374.7781300892.

The spelling of 52640829 in words is "fifty-two million, six hundred forty thousand, eight hundred twenty-nine".