52521705 has 24 divisors (see below), whose sum is σ = 93158208. Its totient is φ = 27359136.

The previous prime is 52521691. The next prime is 52521709. The reversal of 52521705 is 50712525.

It is a happy number.

52521705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52521705 - 2⁷ = 52521577 is a prime.

It is a super-2 number, since 2×52521705² = 5517058992214050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52521709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11637 + ... + 15506.

It is an arithmetic number, because the mean of its divisors is an integer number (3881592).

Almost surely, 2^52521705 is an apocalyptic number.

It is an amenable number.

52521705 is a deficient number, since it is larger than the sum of its proper divisors (40636503).

52521705 is a wasteful number, since it uses less digits than its factorization.

52521705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27197 (or 27194 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 52521705 is about 7247.1860056162. The cubic root of 52521705 is about 374.4952141482.

The spelling of 52521705 in words is "fifty-two million, five hundred twenty-one thousand, seven hundred five".