4145451997 has 2 divisors, whose sum is σ = 4145451998. Its totient is φ = 4145451996.

The previous prime is 4145451953. The next prime is 4145452013. The reversal of 4145451997 is 7991545414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2332310436 + 1813141561 = 48294^2 + 42581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4145451997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4145451997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4145451907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072725998 + 2072725999.

It is an arithmetic number, because the mean of its divisors is an integer number (2072725999).

Almost surely, 2^4145451997 is an apocalyptic number.

It is an amenable number.

4145451997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4145451997 is an equidigital number, since it uses as much as digits as its factorization.

4145451997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 49.

The square root of 4145451997 is about 64385.1846079515. The cubic root of 4145451997 is about 1606.4133210829.

The spelling of 4145451997 in words is "four billion, one hundred forty-five million, four hundred fifty-one thousand, nine hundred ninety-seven".