52742791 has 4 divisors (see below), whose sum is σ = 53737992. Its totient is φ = 51747592.

The previous prime is 52742783. The next prime is 52742819. The reversal of 52742791 is 19724725.

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 52742791 - 2³ = 52742783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52742791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52742731) 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, 497521 + ... + 497626.

It is an arithmetic number, because the mean of its divisors is an integer number (13434498).

Almost surely, 2^52742791 is an apocalyptic number.

52742791 is a deficient number, since it is larger than the sum of its proper divisors (995201).

52742791 is an equidigital number, since it uses as much as digits as its factorization.

52742791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995200.

The product of its digits is 35280, while the sum is 37.

The square root of 52742791 is about 7262.4232181828. The cubic root of 52742791 is about 375.0199479759.

The spelling of 52742791 in words is "fifty-two million, seven hundred forty-two thousand, seven hundred ninety-one".