215240552 has 32 divisors (see below), whose sum is σ = 418883400. Its totient is φ = 103563264.

The previous prime is 215240551. The next prime is 215240561. The reversal of 215240552 is 255042512.

215240552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 202948516 + 12292036 = 14246^2 + 3506^2 .

It is not an unprimeable number, because it can be changed into a prime (215240551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76808 + ... + 79560.

Almost surely, 2^215240552 is an apocalyptic number.

It is an amenable number.

215240552 is a deficient number, since it is larger than the sum of its proper divisors (203642848).

215240552 is a wasteful number, since it uses less digits than its factorization.

215240552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3121 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 215240552 is about 14671.0787606093. The cubic root of 215240552 is about 599.2959816608.

The spelling of 215240552 in words is "two hundred fifteen million, two hundred forty thousand, five hundred fifty-two".