215040497 has 8 divisors (see below), whose sum is σ = 260217216. Its totient is φ = 173477952.

The previous prime is 215040479. The next prime is 215040503. The reversal of 215040497 is 794040512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215040497 - 2¹⁴ = 215024113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215040457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903413 + ... + 903650.

It is an arithmetic number, because the mean of its divisors is an integer number (32527152).

Almost surely, 2^215040497 is an apocalyptic number.

It is an amenable number.

215040497 is a deficient number, since it is larger than the sum of its proper divisors (45176719).

215040497 is a wasteful number, since it uses less digits than its factorization.

215040497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807087.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 215040497 is about 14664.2591698319. The cubic root of 215040497 is about 599.1102525309.

The spelling of 215040497 in words is "two hundred fifteen million, forty thousand, four hundred ninety-seven".