52227521 has 4 divisors (see below), whose sum is σ = 54028500. Its totient is φ = 50426544.

The previous prime is 52227509. The next prime is 52227533. The reversal of 52227521 is 12572225.

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

It is an interprime number because it is at equal distance from previous prime (52227509) and next prime (52227533).

It can be written as a sum of positive squares in 2 ways, for example, as 28569025 + 23658496 = 5345^2 + 4864^2 .

It is a cyclic number.

It is not a de Polignac number, because 52227521 - 2¹⁸ = 51965377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52227121) 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, 900446 + ... + 900503.

It is an arithmetic number, because the mean of its divisors is an integer number (13507125).

Almost surely, 2^52227521 is an apocalyptic number.

It is an amenable number.

52227521 is a deficient number, since it is larger than the sum of its proper divisors (1800979).

52227521 is a wasteful number, since it uses less digits than its factorization.

52227521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800978.

The product of its digits is 2800, while the sum is 26.

The square root of 52227521 is about 7226.8610751833. The cubic root of 52227521 is about 373.7946984419.

Adding to 52227521 its reverse (12572225), we get a palindrome (64799746).

The spelling of 52227521 in words is "fifty-two million, two hundred twenty-seven thousand, five hundred twenty-one".