45020205 has 40 divisors (see below), whose sum is σ = 81675000. Its totient is φ = 23721984.

The previous prime is 45020203. The next prime is 45020207. The reversal of 45020205 is 50202054.

45020205 = T₉₆₁ + T₉₆₂ + ... + T₁₀₄₉.

It is an interprime number because it is at equal distance from previous prime (45020203) and next prime (45020207).

It can be written as a sum of positive squares in 4 ways, for example, as 544644 + 44475561 = 738^2 + 6669^2 .

It is not a de Polignac number, because 45020205 - 2¹ = 45020203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45020203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35421 + ... + 36669.

It is an arithmetic number, because the mean of its divisors is an integer number (2041875).

Almost surely, 2^45020205 is an apocalyptic number.

45020205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45020205 is a deficient number, since it is larger than the sum of its proper divisors (36654795).

45020205 is a wasteful number, since it uses less digits than its factorization.

45020205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 45020205 is about 6709.7097552726. The cubic root of 45020205 is about 355.7425573200.

Adding to 45020205 its reverse (50202054), we get a palindrome (95222259).

The spelling of 45020205 in words is "forty-five million, twenty thousand, two hundred five".