53357143 has 4 divisors (see below), whose sum is σ = 60979600. Its totient is φ = 45734688.

The previous prime is 53357137. The next prime is 53357147. The reversal of 53357143 is 34175335.

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 53357143 - 2⁹ = 53356631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53357147) 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, 3811218 + ... + 3811231.

It is an arithmetic number, because the mean of its divisors is an integer number (15244900).

Almost surely, 2^53357143 is an apocalyptic number.

53357143 is a deficient number, since it is larger than the sum of its proper divisors (7622457).

53357143 is an equidigital number, since it uses as much as digits as its factorization.

53357143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622456.

The product of its digits is 18900, while the sum is 31.

The square root of 53357143 is about 7304.5973879469. The cubic root of 53357143 is about 376.4704176044.

The spelling of 53357143 in words is "fifty-three million, three hundred fifty-seven thousand, one hundred forty-three".