63342521 has 4 divisors (see below), whose sum is σ = 69100944. Its totient is φ = 57584100.

The previous prime is 63342509. The next prime is 63342553. The reversal of 63342521 is 12524336.

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 63342521 - 2¹⁸ = 63080377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63342571) 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, 2879195 + ... + 2879216.

It is an arithmetic number, because the mean of its divisors is an integer number (17275236).

Almost surely, 2^63342521 is an apocalyptic number.

It is an amenable number.

63342521 is a deficient number, since it is larger than the sum of its proper divisors (5758423).

63342521 is a wasteful number, since it uses less digits than its factorization.

63342521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758422.

The product of its digits is 4320, while the sum is 26.

The square root of 63342521 is about 7958.8014801225. The cubic root of 63342521 is about 398.6255346051.

Adding to 63342521 its reverse (12524336), we get a palindrome (75866857).

The spelling of 63342521 in words is "sixty-three million, three hundred forty-two thousand, five hundred twenty-one".