45990145 has 8 divisors (see below), whose sum is σ = 55253160. Its totient is φ = 36748800.

The previous prime is 45990121. The next prime is 45990169. The reversal of 45990145 is 54109954.

It is an interprime number because it is at equal distance from previous prime (45990121) and next prime (45990169).

It can be written as a sum of positive squares in 4 ways, for example, as 3779136 + 42211009 = 1944^2 + 6497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45990145 - 2¹³ = 45981953 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306 + ... + 9595.

It is an arithmetic number, because the mean of its divisors is an integer number (6906645).

Almost surely, 2^45990145 is an apocalyptic number.

It is an amenable number.

45990145 is a deficient number, since it is larger than the sum of its proper divisors (9263015).

45990145 is an equidigital number, since it uses as much as digits as its factorization.

45990145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10835.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 45990145 is about 6781.6034239699. The cubic root of 45990145 is about 358.2791976387.

The spelling of 45990145 in words is "forty-five million, nine hundred ninety thousand, one hundred forty-five".