53151685 has 4 divisors (see below), whose sum is σ = 63782028. Its totient is φ = 42521344.

The previous prime is 53151661. The next prime is 53151691. The reversal of 53151685 is 58615135.

53151685 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 can be written as a sum of positive squares in 2 ways, for example, as 25715041 + 27436644 = 5071^2 + 5238^2 .

It is a cyclic number.

It is not a de Polignac number, because 53151685 - 2⁹ = 53151173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53151685.

It is a congruent number.

It is an unprimeable number.

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, 5315164 + ... + 5315173.

It is an arithmetic number, because the mean of its divisors is an integer number (15945507).

Almost surely, 2^53151685 is an apocalyptic number.

It is an amenable number.

53151685 is a deficient number, since it is larger than the sum of its proper divisors (10630343).

53151685 is a wasteful number, since it uses less digits than its factorization.

53151685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630342.

The product of its digits is 18000, while the sum is 34.

The square root of 53151685 is about 7290.5202146349. The cubic root of 53151685 is about 375.9865814021.

The spelling of 53151685 in words is "fifty-three million, one hundred fifty-one thousand, six hundred eighty-five".