63529121 has 4 divisors (see below), whose sum is σ = 64570644. Its totient is φ = 62487600.

The previous prime is 63529093. The next prime is 63529129. The reversal of 63529121 is 12192536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30913600 + 32615521 = 5560^2 + 5711^2 .

It is a cyclic number.

It is not a de Polignac number, because 63529121 - 2¹⁰ = 63528097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63529129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520670 + ... + 520791.

It is an arithmetic number, because the mean of its divisors is an integer number (16142661).

Almost surely, 2^63529121 is an apocalyptic number.

63529121 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

63529121 is a deficient number, since it is larger than the sum of its proper divisors (1041523).

63529121 is a wasteful number, since it uses less digits than its factorization.

63529121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041522.

The product of its digits is 3240, while the sum is 29.

The square root of 63529121 is about 7970.5157298634. The cubic root of 63529121 is about 399.0165863085.

The spelling of 63529121 in words is "sixty-three million, five hundred twenty-nine thousand, one hundred twenty-one".