53021533544 has 32 divisors (see below), whose sum is σ = 113639188800. Its totient is φ = 22719191040.

The previous prime is 53021533511. The next prime is 53021533553. The reversal of 53021533544 is 44533512035.

It is a happy number.

It is a super-2 number, since 2×53021533544² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216104 + ... + 390824.

It is an arithmetic number, because the mean of its divisors is an integer number (3551224650).

Almost surely, 2^53021533544 is an apocalyptic number.

It is an amenable number.

53021533544 is an abundant number, since it is smaller than the sum of its proper divisors (60617655256).

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

53021533544 is a wasteful number, since it uses less digits than its factorization.

53021533544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180153 (or 180149 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 53021533544 in words is "fifty-three billion, twenty-one million, five hundred thirty-three thousand, five hundred forty-four".