245621216 has 24 divisors (see below), whose sum is σ = 488268144. Its totient is φ = 121616640.

The previous prime is 245621179. The next prime is 245621231. The reversal of 245621216 is 612126542.

245621216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33965 + ... + 40556.

It is an arithmetic number, because the mean of its divisors is an integer number (20344506).

Almost surely, 2^245621216 is an apocalyptic number.

It is an amenable number.

245621216 is a deficient number, since it is larger than the sum of its proper divisors (242646928).

245621216 is a wasteful number, since it uses less digits than its factorization.

245621216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74634 (or 74626 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 245621216 is about 15672.3072966299. The cubic root of 245621216 is about 626.2608921842.

Adding to 245621216 its reverse (612126542), we get a palindrome (857747758).

The spelling of 245621216 in words is "two hundred forty-five million, six hundred twenty-one thousand, two hundred sixteen".