53216390 has 8 divisors (see below), whose sum is σ = 95789520. Its totient is φ = 21286552.

The previous prime is 53216389. The next prime is 53216419. The reversal of 53216390 is 9361235.

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

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, 2660810 + ... + 2660829.

It is an arithmetic number, because the mean of its divisors is an integer number (11973690).

Almost surely, 2^53216390 is an apocalyptic number.

53216390 is a deficient number, since it is larger than the sum of its proper divisors (42573130).

53216390 is a wasteful number, since it uses less digits than its factorization.

53216390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321646.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 53216390 is about 7294.9564769092. The cubic root of 53216390 is about 376.1390904982.

It can be divided in two parts, 5321 and 6390, that added together give a palindrome (11711).

The spelling of 53216390 in words is "fifty-three million, two hundred sixteen thousand, three hundred ninety".