45521213 has 8 divisors (see below), whose sum is σ = 47308800. Its totient is φ = 43748208.

The previous prime is 45521191. The next prime is 45521251. The reversal of 45521213 is 31212554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45521213 - 2¹⁶ = 45455677 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 (45521513) 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, 2948 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (5913600).

Almost surely, 2^45521213 is an apocalyptic number.

It is an amenable number.

45521213 is a deficient number, since it is larger than the sum of its proper divisors (1787587).

45521213 is a wasteful number, since it uses less digits than its factorization.

45521213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291.

The product of its digits is 1200, while the sum is 23.

The square root of 45521213 is about 6746.9410105617. The cubic root of 45521213 is about 357.0573209175.

Adding to 45521213 its reverse (31212554), we get a palindrome (76733767).

The spelling of 45521213 in words is "forty-five million, five hundred twenty-one thousand, two hundred thirteen".