53015818 has 8 divisors (see below), whose sum is σ = 81373248. Its totient is φ = 25891404.

The previous prime is 53015801. The next prime is 53015821. The reversal of 53015818 is 81851035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 53015818.

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, 308146 + ... + 308317.

It is an arithmetic number, because the mean of its divisors is an integer number (10171656).

Almost surely, 2^53015818 is an apocalyptic number.

53015818 is a deficient number, since it is larger than the sum of its proper divisors (28357430).

53015818 is a wasteful number, since it uses less digits than its factorization.

53015818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616508.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 53015818 is about 7281.1961929342. The cubic root of 53015818 is about 375.6659408422.

The spelling of 53015818 in words is "fifty-three million, fifteen thousand, eight hundred eighteen".