2153471657 has 2 divisors, whose sum is σ = 2153471658. Its totient is φ = 2153471656.

The previous prime is 2153471653. The next prime is 2153471681. The reversal of 2153471657 is 7561743512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1257127936 + 896343721 = 35456^2 + 29939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153471657 - 2² = 2153471653 is a prime.

It is not a weakly prime, because it can be changed into another prime (2153471653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076735828 + 1076735829.

It is an arithmetic number, because the mean of its divisors is an integer number (1076735829).

Almost surely, 2^2153471657 is an apocalyptic number.

It is an amenable number.

2153471657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153471657 is an equidigital number, since it uses as much as digits as its factorization.

2153471657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 41.

The square root of 2153471657 is about 46405.5132177202. The cubic root of 2153471657 is about 1291.3571952890.

The spelling of 2153471657 in words is "two billion, one hundred fifty-three million, four hundred seventy-one thousand, six hundred fifty-seven".