45127213 has 8 divisors (see below), whose sum is σ = 46224248. Its totient is φ = 44043264.

The previous prime is 45127193. The next prime is 45127217. The reversal of 45127213 is 31272154.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13520329 + 31606884 = 3677^2 + 5622^2 .

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

It is a 6-Lehmer number, since φ(45127213) divides (45127213-1)⁶.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45127213 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 (45127217) 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, 3895 + ... + 10267.

It is an arithmetic number, because the mean of its divisors is an integer number (5778031).

Almost surely, 2^45127213 is an apocalyptic number.

It is an amenable number.

45127213 is a deficient number, since it is larger than the sum of its proper divisors (1097035).

45127213 is an equidigital number, since it uses as much as digits as its factorization.

45127213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543.

The product of its digits is 1680, while the sum is 25.

The square root of 45127213 is about 6717.6791379166. The cubic root of 45127213 is about 356.0241877476.

Adding to 45127213 its reverse (31272154), we get a palindrome (76399367).

The spelling of 45127213 in words is "forty-five million, one hundred twenty-seven thousand, two hundred thirteen".