45490645 has 4 divisors (see below), whose sum is σ = 54588780. Its totient is φ = 36392512.

The previous prime is 45490639. The next prime is 45490651. The reversal of 45490645 is 54609454.

45490645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54609454 = 2 ⋅27304727.

It is an interprime number because it is at equal distance from previous prime (45490639) and next prime (45490651).

It can be written as a sum of positive squares in 2 ways, for example, as 27436644 + 18054001 = 5238^2 + 4249^2 .

It is a cyclic number.

It is not a de Polignac number, because 45490645 - 2¹³ = 45482453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4549060 + ... + 4549069.

It is an arithmetic number, because the mean of its divisors is an integer number (13647195).

Almost surely, 2^45490645 is an apocalyptic number.

It is an amenable number.

45490645 is a deficient number, since it is larger than the sum of its proper divisors (9098135).

45490645 is an equidigital number, since it uses as much as digits as its factorization.

45490645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098134.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 45490645 is about 6744.6753072331. The cubic root of 45490645 is about 356.9773803692.

The spelling of 45490645 in words is "forty-five million, four hundred ninety thousand, six hundred forty-five".