52571521 has 8 divisors (see below), whose sum is σ = 54057600. Its totient is φ = 51100848.

The previous prime is 52571507. The next prime is 52571527. The reversal of 52571521 is 12517525.

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

It is a cyclic number.

It is not a de Polignac number, because 52571521 - 2²³ = 44182913 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 52571521.

It is not an unprimeable number, because it can be changed into a prime (52571527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3250 + ... + 10756.

It is an arithmetic number, because the mean of its divisors is an integer number (6757200).

Almost surely, 2^52571521 is an apocalyptic number.

It is an amenable number.

52571521 is a deficient number, since it is larger than the sum of its proper divisors (1486079).

52571521 is a wasteful number, since it uses less digits than its factorization.

52571521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703.

The product of its digits is 3500, while the sum is 28.

The square root of 52571521 is about 7250.6221112398. The cubic root of 52571521 is about 374.6135776479.

The spelling of 52571521 in words is "fifty-two million, five hundred seventy-one thousand, five hundred twenty-one".