45161213 has 16 divisors (see below), whose sum is σ = 48940416. Its totient is φ = 41564160.

The previous prime is 45161209. The next prime is 45161227. The reversal of 45161213 is 31216154.

It is not a de Polignac number, because 45161213 - 2² = 45161209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45161273) 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, 77981 + ... + 78557.

It is an arithmetic number, because the mean of its divisors is an integer number (3058776).

Almost surely, 2^45161213 is an apocalyptic number.

It is an amenable number.

45161213 is a deficient number, since it is larger than the sum of its proper divisors (3779203).

45161213 is a wasteful number, since it uses less digits than its factorization.

45161213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 720, while the sum is 23.

The square root of 45161213 is about 6720.2092973359. The cubic root of 45161213 is about 356.1135778874.

Adding to 45161213 its reverse (31216154), we get a palindrome (76377367).

The spelling of 45161213 in words is "forty-five million, one hundred sixty-one thousand, two hundred thirteen".