45078997 has 2 divisors, whose sum is σ = 45078998. Its totient is φ = 45078996.

The previous prime is 45078973. The next prime is 45079037. The reversal of 45078997 is 79987054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44809636 + 269361 = 6694^2 + 519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45078997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45078997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45078947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22539498 + 22539499.

It is an arithmetic number, because the mean of its divisors is an integer number (22539499).

Almost surely, 2^45078997 is an apocalyptic number.

It is an amenable number.

45078997 is a deficient number, since it is larger than the sum of its proper divisors (1).

45078997 is an equidigital number, since it uses as much as digits as its factorization.

45078997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 45078997 is about 6714.0894393804. The cubic root of 45078997 is about 355.8973449965.

The spelling of 45078997 in words is "forty-five million, seventy-eight thousand, nine hundred ninety-seven".