53420213531 has 8 divisors (see below), whose sum is σ = 54207496464. Its totient is φ = 52634430720.

The previous prime is 53420213519. The next prime is 53420213533. The reversal of 53420213531 is 13531202435.

It is a happy number.

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 53420213531 - 2¹⁴ = 53420197147 is a prime.

It is a super-2 number, since 2×53420213531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53420213494 and 53420213503.

It is not an unprimeable number, because it can be changed into a prime (53420213533) 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, 303185 + ... + 445826.

It is an arithmetic number, because the mean of its divisors is an integer number (6775937058).

Almost surely, 2^53420213531 is an apocalyptic number.

53420213531 is a deficient number, since it is larger than the sum of its proper divisors (787282933).

53420213531 is an equidigital number, since it uses as much as digits as its factorization.

53420213531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750061.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 53420213531 its reverse (13531202435), we get a palindrome (66951415966).

The spelling of 53420213531 in words is "fifty-three billion, four hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".