215343045 has 12 divisors (see below), whose sum is σ = 373261356. Its totient is φ = 114849600.

The previous prime is 215343041. The next prime is 215343047. The reversal of 215343045 is 540343512.

It can be written as a sum of positive squares in 2 ways, for example, as 139287204 + 76055841 = 11802^2 + 8721^2 .

It is not a de Polignac number, because 215343045 - 2² = 215343041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215343041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2392656 + ... + 2392745.

It is an arithmetic number, because the mean of its divisors is an integer number (31105113).

Almost surely, 2^215343045 is an apocalyptic number.

It is an amenable number.

215343045 is a deficient number, since it is larger than the sum of its proper divisors (157918311).

215343045 is a wasteful number, since it uses less digits than its factorization.

215343045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785412 (or 4785409 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 215343045 is about 14674.5713736381. The cubic root of 215343045 is about 599.3910905913.

Adding to 215343045 its reverse (540343512), we get a palindrome (755686557).

The spelling of 215343045 in words is "two hundred fifteen million, three hundred forty-three thousand, forty-five".