2153220497 has 2 divisors, whose sum is σ = 2153220498. Its totient is φ = 2153220496.

The previous prime is 2153220451. The next prime is 2153220533. The reversal of 2153220497 is 7940223512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2151475456 + 1745041 = 46384^2 + 1321^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153220497 - 2¹⁴ = 2153204113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2153220437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076610248 + 1076610249.

It is an arithmetic number, because the mean of its divisors is an integer number (1076610249).

Almost surely, 2^2153220497 is an apocalyptic number.

It is an amenable number.

2153220497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153220497 is an equidigital number, since it uses as much as digits as its factorization.

2153220497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2153220497 is about 46402.8069948360. The cubic root of 2153220497 is about 1291.3069895538.

The spelling of 2153220497 in words is "two billion, one hundred fifty-three million, two hundred twenty thousand, four hundred ninety-seven".