63552861 has 6 divisors (see below), whose sum is σ = 91798590. Its totient is φ = 42368568.

The previous prime is 63552857. The next prime is 63552877. The reversal of 63552861 is 16825536.

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 11799225 = 7194^2 + 3435^2 .

It is not a de Polignac number, because 63552861 - 2² = 63552857 is a prime.

It is a super-2 number, since 2×63552861² = 8077932282570642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63552061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3530706 + ... + 3530723.

It is an arithmetic number, because the mean of its divisors is an integer number (15299765).

Almost surely, 2^63552861 is an apocalyptic number.

It is an amenable number.

63552861 is a deficient number, since it is larger than the sum of its proper divisors (28245729).

63552861 is a wasteful number, since it uses less digits than its factorization.

63552861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7061435 (or 7061432 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 63552861 is about 7972.0048294014. The cubic root of 63552861 is about 399.0662825419.

It can be divided in two parts, 6355 and 2861, that added together give a square (9216 = 96²).

The spelling of 63552861 in words is "sixty-three million, five hundred fifty-two thousand, eight hundred sixty-one".