63521941 has 8 divisors (see below), whose sum is σ = 73275840. Its totient is φ = 53937888.

The previous prime is 63521893. The next prime is 63521981. The reversal of 63521941 is 14912536.

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 63521941 - 2⁹ = 63521429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63521981) 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, 41656 + ... + 43153.

It is an arithmetic number, because the mean of its divisors is an integer number (9159480).

Almost surely, 2^63521941 is an apocalyptic number.

It is an amenable number.

63521941 is a deficient number, since it is larger than the sum of its proper divisors (9753899).

63521941 is a wasteful number, since it uses less digits than its factorization.

63521941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84923.

The product of its digits is 6480, while the sum is 31.

The square root of 63521941 is about 7970.0653071352. The cubic root of 63521941 is about 399.0015535855.

The spelling of 63521941 in words is "sixty-three million, five hundred twenty-one thousand, nine hundred forty-one".