52557787 has 4 divisors (see below), whose sum is σ = 52590456. Its totient is φ = 52525120.

The previous prime is 52557767. The next prime is 52557823. The reversal of 52557787 is 78775525.

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 52557787 - 2¹¹ = 52555739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52557767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13789 + ... + 17182.

It is an arithmetic number, because the mean of its divisors is an integer number (13147614).

Almost surely, 2^52557787 is an apocalyptic number.

52557787 is a deficient number, since it is larger than the sum of its proper divisors (32669).

52557787 is a wasteful number, since it uses less digits than its factorization.

52557787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32668.

The product of its digits is 686000, while the sum is 46.

The square root of 52557787 is about 7249.6749582309. The cubic root of 52557787 is about 374.5809529436.

The spelling of 52557787 in words is "fifty-two million, five hundred fifty-seven thousand, seven hundred eighty-seven".