216473253 has 16 divisors (see below), whose sum is σ = 295612416. Its totient is φ = 140853440.

The previous prime is 216473219. The next prime is 216473267. The reversal of 216473253 is 352374612.

It is a cyclic number.

It is not a de Polignac number, because 216473253 - 2¹² = 216469157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216473293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27868 + ... + 34778.

It is an arithmetic number, because the mean of its divisors is an integer number (18475776).

Almost surely, 2^216473253 is an apocalyptic number.

It is an amenable number.

216473253 is a deficient number, since it is larger than the sum of its proper divisors (79139163).

216473253 is a wasteful number, since it uses less digits than its factorization.

216473253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164.

The product of its digits is 30240, while the sum is 33.

The square root of 216473253 is about 14713.0300414293. The cubic root of 216473253 is about 600.4378775832.

The spelling of 216473253 in words is "two hundred sixteen million, four hundred seventy-three thousand, two hundred fifty-three".