2154554497 has 2 divisors, whose sum is σ = 2154554498. Its totient is φ = 2154554496.

The previous prime is 2154554459. The next prime is 2154554539. The reversal of 2154554497 is 7944554512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2050187841 + 104366656 = 45279^2 + 10216^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154554497 - 2³¹ = 7070849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2154554407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077277248 + 1077277249.

It is an arithmetic number, because the mean of its divisors is an integer number (1077277249).

Almost surely, 2^2154554497 is an apocalyptic number.

It is an amenable number.

2154554497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154554497 is an equidigital number, since it uses as much as digits as its factorization.

2154554497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008000, while the sum is 46.

The square root of 2154554497 is about 46417.1788996272. The cubic root of 2154554497 is about 1291.5736053679.

The spelling of 2154554497 in words is "two billion, one hundred fifty-four million, five hundred fifty-four thousand, four hundred ninety-seven".