215364049 has 4 divisors (see below), whose sum is σ = 215563264. Its totient is φ = 215164836.

The previous prime is 215364047. The next prime is 215364073. The reversal of 215364049 is 940463512.

It is a happy number.

215364049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215364049 - 2¹ = 215364047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215364043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97977 + ... + 100150.

It is an arithmetic number, because the mean of its divisors is an integer number (53890816).

Almost surely, 2^215364049 is an apocalyptic number.

It is an amenable number.

215364049 is a deficient number, since it is larger than the sum of its proper divisors (199215).

215364049 is a wasteful number, since it uses less digits than its factorization.

215364049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199214.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 215364049 is about 14675.2870159326. The cubic root of 215364049 is about 599.4105776399.

The spelling of 215364049 in words is "two hundred fifteen million, three hundred sixty-four thousand, forty-nine".