53205531555531 has 8 divisors (see below), whose sum is σ = 71191382624320. Its totient is φ = 35345017428552.

The previous prime is 53205531555497. The next prime is 53205531555599. The reversal of 53205531555531 is 13555513550235.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53205531555531 - 2¹¹ = 53205531553483 is a prime.

It is a super-2 number, since 2×53205531555531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53205531555131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31334234461 + ... + 31334236158.

It is an arithmetic number, because the mean of its divisors is an integer number (8898922828040).

Almost surely, 2^{53205531555531} is an apocalyptic number.

53205531555531 is a deficient number, since it is larger than the sum of its proper divisors (17985851068789).

53205531555531 is a wasteful number, since it uses less digits than its factorization.

53205531555531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62668470905.

The product of its (nonzero) digits is 4218750, while the sum is 48.

The spelling of 53205531555531 in words is "fifty-three trillion, two hundred five billion, five hundred thirty-one million, five hundred fifty-five thousand, five hundred thirty-one".