2545416397 has 2 divisors, whose sum is σ = 2545416398. Its totient is φ = 2545416396.

The previous prime is 2545416343. The next prime is 2545416431. The reversal of 2545416397 is 7936145452.

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., 1954877796 + 590538601 = 44214^2 + 24301^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545416397 - 2¹⁵ = 2545383629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545416197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272708198 + 1272708199.

It is an arithmetic number, because the mean of its divisors is an integer number (1272708199).

Almost surely, 2^2545416397 is an apocalyptic number.

It is an amenable number.

2545416397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545416397 is an equidigital number, since it uses as much as digits as its factorization.

2545416397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 46.

The square root of 2545416397 is about 50452.1198464445. The cubic root of 2545416397 is about 1365.3781411976.

The spelling of 2545416397 in words is "two billion, five hundred forty-five million, four hundred sixteen thousand, three hundred ninety-seven".