45211540 has 24 divisors (see below), whose sum is σ = 103576032. Its totient is φ = 16440480.

The previous prime is 45211519. The next prime is 45211549. The reversal of 45211540 is 4511254.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45211549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102534 + ... + 102973.

It is an arithmetic number, because the mean of its divisors is an integer number (4315668).

Almost surely, 2^45211540 is an apocalyptic number.

It is an amenable number.

45211540 is an abundant number, since it is smaller than the sum of its proper divisors (58364492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45211540 is a wasteful number, since it uses less digits than its factorization.

45211540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205527 (or 205525 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 45211540 is about 6723.9527065559. The cubic root of 45211540 is about 356.2458113799.

Adding to 45211540 its reverse (4511254), we get a palindrome (49722794).

The spelling of 45211540 in words is "forty-five million, two hundred eleven thousand, five hundred forty".