53842279 has 4 divisors (see below), whose sum is σ = 54754920. Its totient is φ = 52929640.

The previous prime is 53842259. The next prime is 53842297. The reversal of 53842279 is 97224835.

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 53842279 - 2²⁵ = 20287847 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53842249) 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, 456232 + ... + 456349.

It is an arithmetic number, because the mean of its divisors is an integer number (13688730).

Almost surely, 2^53842279 is an apocalyptic number.

53842279 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

53842279 is a deficient number, since it is larger than the sum of its proper divisors (912641).

53842279 is an equidigital number, since it uses as much as digits as its factorization.

53842279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912640.

The product of its digits is 120960, while the sum is 40.

The square root of 53842279 is about 7337.7298260429. The cubic root of 53842279 is about 377.6079635061.

The spelling of 53842279 in words is "fifty-three million, eight hundred forty-two thousand, two hundred seventy-nine".