63553140 has 384 divisors, whose sum is σ = 255467520. Its totient is φ = 12773376.

The previous prime is 63553099. The next prime is 63553151. The reversal of 63553140 is 4135536.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1477959 + ... + 1478001.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^63553140 is an apocalyptic number.

63553140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63553140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127733760).

63553140 is an abundant number, since it is smaller than the sum of its proper divisors (191914380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63553140 is a wasteful number, since it uses less digits than its factorization.

63553140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 63553140 is about 7972.0223281173. The cubic root of 63553140 is about 399.0668665141.

Adding to 63553140 its reverse (4135536), we get a palindrome (67688676).

The spelling of 63553140 in words is "sixty-three million, five hundred fifty-three thousand, one hundred forty".