53216906 has 8 divisors (see below), whose sum is σ = 80037120. Its totient is φ = 26537868.

The previous prime is 53216903. The next prime is 53216923. The reversal of 53216906 is 60961235.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (53216903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34346 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (10004640).

Almost surely, 2^53216906 is an apocalyptic number.

53216906 is a deficient number, since it is larger than the sum of its proper divisors (26820214).

53216906 is a wasteful number, since it uses less digits than its factorization.

53216906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70588.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 53216906 is about 7294.9918437240. The cubic root of 53216906 is about 376.1403062085.

The spelling of 53216906 in words is "fifty-three million, two hundred sixteen thousand, nine hundred six".