52662021 has 4 divisors (see below), whose sum is σ = 70216032. Its totient is φ = 35108012.

The previous prime is 52662017. The next prime is 52662031. The reversal of 52662021 is 12026625.

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 52662021 - 2² = 52662017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52661982 and 52662000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52662011) 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, 8777001 + ... + 8777006.

It is an arithmetic number, because the mean of its divisors is an integer number (17554008).

Almost surely, 2^52662021 is an apocalyptic number.

It is an amenable number.

52662021 is a deficient number, since it is larger than the sum of its proper divisors (17554011).

52662021 is a wasteful number, since it uses less digits than its factorization.

52662021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17554010.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 52662021 is about 7256.8602714948. The cubic root of 52662021 is about 374.8284157244.

Adding to 52662021 its reverse (12026625), we get a palindrome (64688646).

The spelling of 52662021 in words is "fifty-two million, six hundred sixty-two thousand, twenty-one".