215134245 has 32 divisors (see below), whose sum is σ = 402595200. Its totient is φ = 108698112.

The previous prime is 215134229. The next prime is 215134273. The reversal of 215134245 is 542431512.

It is not a de Polignac number, because 215134245 - 2⁴ = 215134229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39372 + ... + 44501.

It is an arithmetic number, because the mean of its divisors is an integer number (12581100).

Almost surely, 2^215134245 is an apocalyptic number.

It is an amenable number.

215134245 is a deficient number, since it is larger than the sum of its proper divisors (187460955).

215134245 is a wasteful number, since it uses less digits than its factorization.

215134245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83906 (or 83900 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 215134245 is about 14667.4553007671. The cubic root of 215134245 is about 599.1973016044.

Adding to 215134245 its reverse (542431512), we get a palindrome (757565757).

The spelling of 215134245 in words is "two hundred fifteen million, one hundred thirty-four thousand, two hundred forty-five".