40520445 has 48 divisors (see below), whose sum is σ = 78272640. Its totient is φ = 17532288.

The previous prime is 40520437. The next prime is 40520449. The reversal of 40520445 is 54402504.

It is not a de Polignac number, because 40520445 - 2³ = 40520437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520449) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37371 + ... + 38439.

It is an arithmetic number, because the mean of its divisors is an integer number (1630680).

Almost surely, 2^40520445 is an apocalyptic number.

It is an amenable number.

40520445 is a deficient number, since it is larger than the sum of its proper divisors (37752195).

40520445 is a wasteful number, since it uses less digits than its factorization.

40520445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40520445 is about 6365.5671389123. The cubic root of 40520445 is about 343.4720499157.

Adding to 40520445 its reverse (54402504), we get a palindrome (94922949).

The spelling of 40520445 in words is "forty million, five hundred twenty thousand, four hundred forty-five".