53405411531 has 4 divisors (see below), whose sum is σ = 53548589952. Its totient is φ = 53262233112.

The previous prime is 53405411509. The next prime is 53405411639. The reversal of 53405411531 is 13511450435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53405411531 - 2¹⁸ = 53405149387 is a prime.

It is a super-2 number, since 2×53405411531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53405413531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71588651 + ... + 71589396.

It is an arithmetic number, because the mean of its divisors is an integer number (13387147488).

Almost surely, 2^53405411531 is an apocalyptic number.

53405411531 is a deficient number, since it is larger than the sum of its proper divisors (143178421).

53405411531 is a wasteful number, since it uses less digits than its factorization.

53405411531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143178420.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 53405411531 its reverse (13511450435), we get a palindrome (66916861966).

The spelling of 53405411531 in words is "fifty-three billion, four hundred five million, four hundred eleven thousand, five hundred thirty-one".