215440083 has 12 divisors (see below), whose sum is σ = 311325768. Its totient is φ = 143564640.

The previous prime is 215440079. The next prime is 215440109. The reversal of 215440083 is 380044512.

215440083 is a `hidden beast` number, since 215 + 440 + 0 + 8 + 3 = 666.

It is not a de Polignac number, because 215440083 - 2² = 215440079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215440003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27991 + ... + 34847.

It is an arithmetic number, because the mean of its divisors is an integer number (25943814).

Almost surely, 2^215440083 is an apocalyptic number.

215440083 is a deficient number, since it is larger than the sum of its proper divisors (95885685).

215440083 is a wasteful number, since it uses less digits than its factorization.

215440083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354 (or 10351 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 215440083 is about 14677.8773329116. The cubic root of 215440083 is about 599.4811097175.

Adding to 215440083 its reverse (380044512), we get a palindrome (595484595).

The spelling of 215440083 in words is "two hundred fifteen million, four hundred forty thousand, eighty-three".