52042687 has 4 divisors (see below), whose sum is σ = 52097256. Its totient is φ = 51988120.

The previous prime is 52042657. The next prime is 52042693. The reversal of 52042687 is 78624025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52042687 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 (52042657) 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, 25828 + ... + 27769.

It is an arithmetic number, because the mean of its divisors is an integer number (13024314).

Almost surely, 2^52042687 is an apocalyptic number.

52042687 is a deficient number, since it is larger than the sum of its proper divisors (54569).

52042687 is an equidigital number, since it uses as much as digits as its factorization.

52042687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54568.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 52042687 is about 7214.0617546567. The cubic root of 52042687 is about 373.3532221724.

The spelling of 52042687 in words is "fifty-two million, forty-two thousand, six hundred eighty-seven".