215101245 has 16 divisors (see below), whose sum is σ = 349011072. Its totient is φ = 113104320.

The previous prime is 215101241. The next prime is 215101253. The reversal of 215101245 is 542101512.

It is not a de Polignac number, because 215101245 - 2² = 215101241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215101241) 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, 99922 + ... + 102051.

It is an arithmetic number, because the mean of its divisors is an integer number (21813192).

Almost surely, 2^215101245 is an apocalyptic number.

It is an amenable number.

215101245 is a deficient number, since it is larger than the sum of its proper divisors (133909827).

215101245 is a wasteful number, since it uses less digits than its factorization.

215101245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202052.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 215101245 is about 14666.3303181130. The cubic root of 215101245 is about 599.1666625615.

Adding to 215101245 its reverse (542101512), we get a palindrome (757202757).

The spelling of 215101245 in words is "two hundred fifteen million, one hundred one thousand, two hundred forty-five".