45511213 has 16 divisors (see below), whose sum is σ = 53015040. Its totient is φ = 38631600.

The previous prime is 45511201. The next prime is 45511229. The reversal of 45511213 is 31211554.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45511213 - 2¹³ = 45503021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45511013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13306 + ... + 16372.

It is an arithmetic number, because the mean of its divisors is an integer number (3313440).

Almost surely, 2^45511213 is an apocalyptic number.

It is an amenable number.

45511213 is a deficient number, since it is larger than the sum of its proper divisors (7503827).

45511213 is a wasteful number, since it uses less digits than its factorization.

45511213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168.

The product of its digits is 600, while the sum is 22.

The square root of 45511213 is about 6746.1998932732. The cubic root of 45511213 is about 357.0311731469.

Adding to 45511213 its reverse (31211554), we get a palindrome (76722767).

The spelling of 45511213 in words is "forty-five million, five hundred eleven thousand, two hundred thirteen".