83215601 has 4 divisors (see below), whose sum is σ = 95103552. Its totient is φ = 71327652.

The previous prime is 83215591. The next prime is 83215619. The reversal of 83215601 is 10651238.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83215601 - 2⁶ = 83215537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83215661) 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, 5943965 + ... + 5943978.

It is an arithmetic number, because the mean of its divisors is an integer number (23775888).

Almost surely, 2^83215601 is an apocalyptic number.

It is an amenable number.

83215601 is a deficient number, since it is larger than the sum of its proper divisors (11887951).

83215601 is a wasteful number, since it uses less digits than its factorization.

83215601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11887950.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 83215601 is about 9122.2585470924. The cubic root of 83215601 is about 436.5844380902.

Adding to 83215601 its reverse (10651238), we get a palindrome (93866839).

The spelling of 83215601 in words is "eighty-three million, two hundred fifteen thousand, six hundred one".