53021504540 has 24 divisors (see below), whose sum is σ = 112870438800. Its totient is φ = 20918072448.

The previous prime is 53021504537. The next prime is 53021504581. The reversal of 53021504540 is 4540512035.

It is a super-2 number, since 2×53021504540² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 18156590 + ... + 18159509.

It is an arithmetic number, because the mean of its divisors is an integer number (4702934950).

Almost surely, 2^53021504540 is an apocalyptic number.

It is an amenable number.

53021504540 is an abundant number, since it is smaller than the sum of its proper divisors (59848934260).

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

53021504540 is a wasteful number, since it uses less digits than its factorization.

53021504540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36316181 (or 36316179 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 53021504540 in words is "fifty-three billion, twenty-one million, five hundred four thousand, five hundred forty".