53143531 has 8 divisors (see below), whose sum is σ = 61214720. Its totient is φ = 45192168.

The previous prime is 53143499. The next prime is 53143543. The reversal of 53143531 is 13534135.

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

It is not a de Polignac number, because 53143531 - 2⁵ = 53143499 is a prime.

It is a super-2 number, since 2×53143531² = 5648469774295922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53143496 and 53143505.

It is not an unprimeable number, because it can be changed into a prime (53143031) 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, 29001 + ... + 30778.

It is an arithmetic number, because the mean of its divisors is an integer number (7651840).

Almost surely, 2^53143531 is an apocalyptic number.

53143531 is a deficient number, since it is larger than the sum of its proper divisors (8071189).

53143531 is a wasteful number, since it uses less digits than its factorization.

53143531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59913.

The product of its digits is 2700, while the sum is 25.

The square root of 53143531 is about 7289.9609738324. The cubic root of 53143531 is about 375.9673537183.

Adding to 53143531 its reverse (13534135), we get a palindrome (66677666).

The spelling of 53143531 in words is "fifty-three million, one hundred forty-three thousand, five hundred thirty-one".