52787287 has 4 divisors (see below), whose sum is σ = 60328336. Its totient is φ = 45246240.

The previous prime is 52787281. The next prime is 52787309. The reversal of 52787287 is 78278725.

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 52787287 - 2¹⁹ = 52262999 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 (52787281) 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, 3770514 + ... + 3770527.

It is an arithmetic number, because the mean of its divisors is an integer number (15082084).

Almost surely, 2^52787287 is an apocalyptic number.

52787287 is a deficient number, since it is larger than the sum of its proper divisors (7541049).

52787287 is an equidigital number, since it uses as much as digits as its factorization.

52787287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7541048.

The product of its digits is 439040, while the sum is 46.

The square root of 52787287 is about 7265.4860126491. The cubic root of 52787287 is about 375.1253791126.

The spelling of 52787287 in words is "fifty-two million, seven hundred eighty-seven thousand, two hundred eighty-seven".