52607521 has 4 divisors (see below), whose sum is σ = 53348544. Its totient is φ = 51866500.

The previous prime is 52607507. The next prime is 52607549. The reversal of 52607521 is 12570625.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52607521 - 2⁷ = 52607393 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 52607521.

It is not an unprimeable number, because it can be changed into a prime (52607021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 370405 + ... + 370546.

It is an arithmetic number, because the mean of its divisors is an integer number (13337136).

Almost surely, 2^52607521 is an apocalyptic number.

It is an amenable number.

52607521 is a deficient number, since it is larger than the sum of its proper divisors (741023).

52607521 is an equidigital number, since it uses as much as digits as its factorization.

52607521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741022.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 52607521 is about 7253.1042319823. The cubic root of 52607521 is about 374.6990676075.

The spelling of 52607521 in words is "fifty-two million, six hundred seven thousand, five hundred twenty-one".