53551330 has 64 divisors (see below), whose sum is σ = 115540992. Its totient is φ = 17487360.

The previous prime is 53551327. The next prime is 53551339. The reversal of 53551330 is 3315535.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 53551295 and 53551304.

It is not an unprimeable number, because it can be changed into a prime (53551339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134692 + ... + 135088.

It is an arithmetic number, because the mean of its divisors is an integer number (1805328).

Almost surely, 2^53551330 is an apocalyptic number.

53551330 is an abundant number, since it is smaller than the sum of its proper divisors (61989662).

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

53551330 is a wasteful number, since it uses less digits than its factorization.

53551330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 53551330 is about 7317.8774244995. The cubic root of 53551330 is about 376.9265711719.

Adding to 53551330 its reverse (3315535), we get a palindrome (56866865).

The spelling of 53551330 in words is "fifty-three million, five hundred fifty-one thousand, three hundred thirty".