245216155 has 16 divisors (see below), whose sum is σ = 302722560. Its totient is φ = 190592352.

The previous prime is 245216129. The next prime is 245216159. The reversal of 245216155 is 551612542.

It is not a de Polignac number, because 245216155 - 2⁵ = 245216123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245216159) 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, 28912 + ... + 36418.

It is an arithmetic number, because the mean of its divisors is an integer number (18920160).

Almost surely, 2^245216155 is an apocalyptic number.

245216155 is a deficient number, since it is larger than the sum of its proper divisors (57506405).

245216155 is a wasteful number, since it uses less digits than its factorization.

245216155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698.

The product of its digits is 12000, while the sum is 31.

The square root of 245216155 is about 15659.3791383950. The cubic root of 245216155 is about 625.9164411602.

Adding to 245216155 its reverse (551612542), we get a palindrome (796828697).

The spelling of 245216155 in words is "two hundred forty-five million, two hundred sixteen thousand, one hundred fifty-five".