53371535521 has 8 divisors (see below), whose sum is σ = 54921718440. Its totient is φ = 51827021568.

The previous prime is 53371535519. The next prime is 53371535531. The reversal of 53371535521 is 12553517335.

It can be written as a sum of positive squares in 4 ways, for example, as 31377162496 + 21994373025 = 177136^2 + 148305^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53371535521 - 2¹ = 53371535519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53371535531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398136 + ... + 1435801.

It is an arithmetic number, because the mean of its divisors is an integer number (6865214805).

Almost surely, 2^53371535521 is an apocalyptic number.

It is an amenable number.

53371535521 is a deficient number, since it is larger than the sum of its proper divisors (1550182919).

53371535521 is a wasteful number, since it uses less digits than its factorization.

53371535521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834483.

The product of its digits is 236250, while the sum is 40.

The spelling of 53371535521 in words is "fifty-three billion, three hundred seventy-one million, five hundred thirty-five thousand, five hundred twenty-one".