39045245 has 4 divisors (see below), whose sum is σ = 46854300. Its totient is φ = 31236192.

The previous prime is 39045221. The next prime is 39045269. The reversal of 39045245 is 54254093.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54254093 = 3853 ⋅14081.

It is an interprime number because it is at equal distance from previous prime (39045221) and next prime (39045269).

It can be written as a sum of positive squares in 2 ways, for example, as 25421764 + 13623481 = 5042^2 + 3691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39045245 is a prime.

It is a super-2 number, since 2×39045245² = 3049062314220050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3904520 + ... + 3904529.

It is an arithmetic number, because the mean of its divisors is an integer number (11713575).

Almost surely, 2^39045245 is an apocalyptic number.

It is an amenable number.

39045245 is a deficient number, since it is larger than the sum of its proper divisors (7809055).

39045245 is an equidigital number, since it uses as much as digits as its factorization.

39045245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809054.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 39045245 is about 6248.6194475260. The cubic root of 39045245 is about 339.2522349553.

The spelling of 39045245 in words is "thirty-nine million, forty-five thousand, two hundred forty-five".