53261520220 has 24 divisors (see below), whose sum is σ = 111854937600. Its totient is φ = 21303513792.

The previous prime is 53261520209. The next prime is 53261520227. The reversal of 53261520220 is 2202516235.

It is a super-2 number, since 2×53261520220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53261520227) 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 7 ways as a sum of consecutive naturals, for example, 413541 + ... + 526819.

It is an arithmetic number, because the mean of its divisors is an integer number (4660622400).

Almost surely, 2^53261520220 is an apocalyptic number.

It is an amenable number.

53261520220 is an abundant number, since it is smaller than the sum of its proper divisors (58593417380).

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

53261520220 is a wasteful number, since it uses less digits than its factorization.

53261520220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136797 (or 136795 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 53261520220 in words is "fifty-three billion, two hundred sixty-one million, five hundred twenty thousand, two hundred twenty".