53308143 has 12 divisors (see below), whose sum is σ = 88000848. Its totient is φ = 30461760.

The previous prime is 53308121. The next prime is 53308147. The reversal of 53308143 is 34180335.

It is a happy number.

It is not a de Polignac number, because 53308143 - 2⁵ = 53308111 is a prime.

It is a super-2 number, since 2×53308143² = 5683516220216898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53308147) 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 11 ways as a sum of consecutive naturals, for example, 423018 + ... + 423143.

It is an arithmetic number, because the mean of its divisors is an integer number (7333404).

Almost surely, 2^53308143 is an apocalyptic number.

53308143 is a deficient number, since it is larger than the sum of its proper divisors (34692705).

53308143 is a wasteful number, since it uses less digits than its factorization.

53308143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846174 (or 846171 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 53308143 is about 7301.2425654816. The cubic root of 53308143 is about 376.3551396916.

Adding to 53308143 its reverse (34180335), we get a palindrome (87488478).

The spelling of 53308143 in words is "fifty-three million, three hundred eight thousand, one hundred forty-three".