53031805 has 4 divisors (see below), whose sum is σ = 63638172. Its totient is φ = 42425440.

The previous prime is 53031787. The next prime is 53031821. The reversal of 53031805 is 50813035.

It is a happy number.

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 23242041 + 29789764 = 4821^2 + 5458^2 .

It is not a de Polignac number, because 53031805 - 2¹⁹ = 52507517 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 53031805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5303176 + ... + 5303185.

It is an arithmetic number, because the mean of its divisors is an integer number (15909543).

Almost surely, 2^53031805 is an apocalyptic number.

It is an amenable number.

53031805 is a deficient number, since it is larger than the sum of its proper divisors (10606367).

53031805 is a wasteful number, since it uses less digits than its factorization.

53031805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606366.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 53031805 is about 7282.2939380390. The cubic root of 53031805 is about 375.7036979246.

The spelling of 53031805 in words is "fifty-three million, thirty-one thousand, eight hundred five".