53389787 has 4 divisors (see below), whose sum is σ = 58243416. Its totient is φ = 48536160.

The previous prime is 53389769. The next prime is 53389801. The reversal of 53389787 is 78798335.

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 53389787 - 2⁶ = 53389723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53389717) 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, 2426798 + ... + 2426819.

It is an arithmetic number, because the mean of its divisors is an integer number (14560854).

Almost surely, 2^53389787 is an apocalyptic number.

53389787 is a deficient number, since it is larger than the sum of its proper divisors (4853629).

53389787 is a wasteful number, since it uses less digits than its factorization.

53389787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853628.

The product of its digits is 1270080, while the sum is 50.

The square root of 53389787 is about 7306.8315294661. The cubic root of 53389787 is about 376.5471770548.

The spelling of 53389787 in words is "fifty-three million, three hundred eighty-nine thousand, seven hundred eighty-seven".