215253497 has 2 divisors, whose sum is σ = 215253498. Its totient is φ = 215253496.

The previous prime is 215253463. The next prime is 215253503. The reversal of 215253497 is 794352512.

215253497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156025081 + 59228416 = 12491^2 + 7696^2 .

It is a cyclic number.

It is not a de Polignac number, because 215253497 - 2¹² = 215249401 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215253497.

It is not a weakly prime, because it can be changed into another prime (215253427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107626748 + 107626749.

It is an arithmetic number, because the mean of its divisors is an integer number (107626749).

Almost surely, 2^215253497 is an apocalyptic number.

It is an amenable number.

215253497 is a deficient number, since it is larger than the sum of its proper divisors (1).

215253497 is an equidigital number, since it uses as much as digits as its factorization.

215253497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The square root of 215253497 is about 14671.5199280783. The cubic root of 215253497 is about 599.3079957088.

The spelling of 215253497 in words is "two hundred fifteen million, two hundred fifty-three thousand, four hundred ninety-seven".