52842749 has 16 divisors (see below), whose sum is σ = 57480192. Its totient is φ = 48392448.

The previous prime is 52842739. The next prime is 52842761. The reversal of 52842749 is 94724825.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52842749 is a prime.

It is a super-2 number, since 2×52842749² = 5584712243754002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52842709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200792 + ... + 201054.

It is an arithmetic number, because the mean of its divisors is an integer number (3592512).

Almost surely, 2^52842749 is an apocalyptic number.

It is an amenable number.

52842749 is a deficient number, since it is larger than the sum of its proper divisors (4637443).

52842749 is a wasteful number, since it uses less digits than its factorization.

52842749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556.

The product of its digits is 161280, while the sum is 41.

The square root of 52842749 is about 7269.3018234216. The cubic root of 52842749 is about 375.2567107440.

The spelling of 52842749 in words is "fifty-two million, eight hundred forty-two thousand, seven hundred forty-nine".