45251213 has 8 divisors (see below), whose sum is σ = 51894528. Its totient is φ = 38652624.

The previous prime is 45251209. The next prime is 45251221. The reversal of 45251213 is 31215254.

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 45251213 - 2² = 45251209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45251273) 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, 8981 + ... + 13082.

It is an arithmetic number, because the mean of its divisors is an integer number (6486816).

Almost surely, 2^45251213 is an apocalyptic number.

It is an amenable number.

45251213 is a deficient number, since it is larger than the sum of its proper divisors (6643315).

45251213 is a wasteful number, since it uses less digits than its factorization.

45251213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22363.

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

The square root of 45251213 is about 6726.9021845126. The cubic root of 45251213 is about 356.3499824839.

Adding to 45251213 its reverse (31215254), we get a palindrome (76466467).

The spelling of 45251213 in words is "forty-five million, two hundred fifty-one thousand, two hundred thirteen".