45289213 has 4 divisors (see below), whose sum is σ = 46850940. Its totient is φ = 43727488.

The previous prime is 45289201. The next prime is 45289229. The reversal of 45289213 is 31298254.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35784324 + 9504889 = 5982^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 45289213 - 2²⁵ = 11734781 is a prime.

It is a super-2 number, since 2×45289213² = 4102225628318738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45289243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780820 + ... + 780877.

It is an arithmetic number, because the mean of its divisors is an integer number (11712735).

Almost surely, 2^45289213 is an apocalyptic number.

It is an amenable number.

45289213 is a deficient number, since it is larger than the sum of its proper divisors (1561727).

45289213 is a wasteful number, since it uses less digits than its factorization.

45289213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561726.

The product of its digits is 17280, while the sum is 34.

The square root of 45289213 is about 6729.7260716912. The cubic root of 45289213 is about 356.4497036459.

It can be divided in two parts, 452892 and 13, that multiplied together give a triangular number (5887596 = T₃₄₃₁).

The spelling of 45289213 in words is "forty-five million, two hundred eighty-nine thousand, two hundred thirteen".