63526421 has 8 divisors (see below), whose sum is σ = 73832640. Its totient is φ = 53527968.

The previous prime is 63526387. The next prime is 63526429. The reversal of 63526421 is 12462536.

63526421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63526421 - 2⁶ = 63526357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63526429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76496 + ... + 77321.

It is an arithmetic number, because the mean of its divisors is an integer number (9229080).

Almost surely, 2^63526421 is an apocalyptic number.

It is an amenable number.

63526421 is a deficient number, since it is larger than the sum of its proper divisors (10306219).

63526421 is a wasteful number, since it uses less digits than its factorization.

63526421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153883.

The product of its digits is 8640, while the sum is 29.

The square root of 63526421 is about 7970.3463538293. The cubic root of 63526421 is about 399.0109334676.

Adding to 63526421 its reverse (12462536), we get a palindrome (75988957).

The spelling of 63526421 in words is "sixty-three million, five hundred twenty-six thousand, four hundred twenty-one".