45353993 has 2 divisors, whose sum is σ = 45353994. Its totient is φ = 45353992.

The previous prime is 45353981. The next prime is 45354017. The reversal of 45353993 is 39935354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32126224 + 13227769 = 5668^2 + 3637^2 .

It is a cyclic number.

It is not a de Polignac number, because 45353993 - 2²⁴ = 28576777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45353993.

It is not a weakly prime, because it can be changed into another prime (45353933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22676996 + 22676997.

It is an arithmetic number, because the mean of its divisors is an integer number (22676997).

Almost surely, 2^45353993 is an apocalyptic number.

It is an amenable number.

45353993 is a deficient number, since it is larger than the sum of its proper divisors (1).

45353993 is an equidigital number, since it uses as much as digits as its factorization.

45353993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 41.

The square root of 45353993 is about 6734.5373263499. The cubic root of 45353993 is about 356.6195734641.

The spelling of 45353993 in words is "forty-five million, three hundred fifty-three thousand, nine hundred ninety-three".