52662321 has 6 divisors (see below), whose sum is σ = 76067810. Its totient is φ = 35108208.

The previous prime is 52662317. The next prime is 52662349. The reversal of 52662321 is 12326625.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 3381921 = 7020^2 + 1839^2 .

It is not a de Polignac number, because 52662321 - 2² = 52662317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52662301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2925676 + ... + 2925693.

Almost surely, 2^52662321 is an apocalyptic number.

It is an amenable number.

52662321 is a deficient number, since it is larger than the sum of its proper divisors (23405489).

52662321 is a wasteful number, since it uses less digits than its factorization.

52662321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5851375 (or 5851372 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 52662321 is about 7256.8809415616. The cubic root of 52662321 is about 374.8291274854.

Adding to 52662321 its reverse (12326625), we get a palindrome (64988946).

The spelling of 52662321 in words is "fifty-two million, six hundred sixty-two thousand, three hundred twenty-one".