216437253 has 8 divisors (see below), whose sum is σ = 288660000. Its totient is φ = 144253008.

The previous prime is 216437201. The next prime is 216437261. The reversal of 216437253 is 352734612.

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

It is not a de Polignac number, because 216437253 - 2¹⁰ = 216436229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216437653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8223 + ... + 22371.

It is an arithmetic number, because the mean of its divisors is an integer number (36082500).

Almost surely, 2^216437253 is an apocalyptic number.

It is an amenable number.

216437253 is a deficient number, since it is larger than the sum of its proper divisors (72222747).

216437253 is a wasteful number, since it uses less digits than its factorization.

216437253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19251.

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

The square root of 216437253 is about 14711.8065851886. The cubic root of 216437253 is about 600.4045910044.

The spelling of 216437253 in words is "two hundred sixteen million, four hundred thirty-seven thousand, two hundred fifty-three".