45405202 has 4 divisors (see below), whose sum is σ = 68107806. Its totient is φ = 22702600.

The previous prime is 45405187. The next prime is 45405203. The reversal of 45405202 is 20250454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39200121 + 6205081 = 6261^2 + 2491^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45405203) by changing a digit.

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 as a sum of consecutive naturals, namely, 11351299 + ... + 11351302.

Almost surely, 2^45405202 is an apocalyptic number.

45405202 is a deficient number, since it is larger than the sum of its proper divisors (22702604).

45405202 is a wasteful number, since it uses less digits than its factorization.

45405202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22702603.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 45405202 is about 6738.3382224403. The cubic root of 45405202 is about 356.7537421933.

Adding to 45405202 its reverse (20250454), we get a palindrome (65655656).

The spelling of 45405202 in words is "forty-five million, four hundred five thousand, two hundred two".