53003387 has 4 divisors (see below), whose sum is σ = 54831120. Its totient is φ = 51175656.

The previous prime is 53003383. The next prime is 53003429. The reversal of 53003387 is 78330035.

53003387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53003387 - 2² = 53003383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1827703 = 53003387 / (5 + 3 + 0 + 0 + 3 + 3 + 8 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53003383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913823 + ... + 913880.

It is an arithmetic number, because the mean of its divisors is an integer number (13707780).

Almost surely, 2^53003387 is an apocalyptic number.

53003387 is a deficient number, since it is larger than the sum of its proper divisors (1827733).

53003387 is a wasteful number, since it uses less digits than its factorization.

53003387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827732.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 53003387 is about 7280.3425056792. The cubic root of 53003387 is about 375.6365768491.

The spelling of 53003387 in words is "fifty-three million, three thousand, three hundred eighty-seven".