53102705 has 4 divisors (see below), whose sum is σ = 63723252. Its totient is φ = 42482160.

The previous prime is 53102689. The next prime is 53102719. The reversal of 53102705 is 50720135.

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 13965169 + 39137536 = 3737^2 + 6256^2 .

It is not a de Polignac number, because 53102705 - 2⁴ = 53102689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5310266 + ... + 5310275.

It is an arithmetic number, because the mean of its divisors is an integer number (15930813).

Almost surely, 2^53102705 is an apocalyptic number.

It is an amenable number.

53102705 is a deficient number, since it is larger than the sum of its proper divisors (10620547).

53102705 is a wasteful number, since it uses less digits than its factorization.

53102705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10620546.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 53102705 is about 7287.1602836770. The cubic root of 53102705 is about 375.8710536600.

The spelling of 53102705 in words is "fifty-three million, one hundred two thousand, seven hundred five".