83216251 has 8 divisors (see below), whose sum is σ = 84525984. Its totient is φ = 81916800.

The previous prime is 83216249. The next prime is 83216281. The reversal of 83216251 is 15261238.

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

It is a cyclic number.

It is not a de Polignac number, because 83216251 - 2¹ = 83216249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83216281) 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, 14625 + ... + 19501.

It is an arithmetic number, because the mean of its divisors is an integer number (10565748).

Almost surely, 2^83216251 is an apocalyptic number.

83216251 is a deficient number, since it is larger than the sum of its proper divisors (1309733).

83216251 is a wasteful number, since it uses less digits than its factorization.

83216251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141.

The product of its digits is 2880, while the sum is 28.

The square root of 83216251 is about 9122.2941741647. The cubic root of 83216251 is about 436.5855748127.

Adding to 83216251 its reverse (15261238), we get a palindrome (98477489).

The spelling of 83216251 in words is "eighty-three million, two hundred sixteen thousand, two hundred fifty-one".