63821053 has 8 divisors (see below), whose sum is σ = 65369528. Its totient is φ = 62290944.

The previous prime is 63821029. The next prime is 63821059. The reversal of 63821053 is 35012836.

It can be written as a sum of positive squares in 4 ways, for example, as 8868484 + 54952569 = 2978^2 + 7413^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63821053 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 (63821059) 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, 2575 + ... + 11587.

It is an arithmetic number, because the mean of its divisors is an integer number (8171191).

Almost surely, 2^63821053 is an apocalyptic number.

It is an amenable number.

63821053 is a deficient number, since it is larger than the sum of its proper divisors (1548475).

63821053 is an equidigital number, since it uses as much as digits as its factorization.

63821053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 63821053 is about 7988.8079836732. The cubic root of 63821053 is about 399.6268457480.

Adding to 63821053 its reverse (35012836), we get a palindrome (98833889).

The spelling of 63821053 in words is "sixty-three million, eight hundred twenty-one thousand, fifty-three".