45540213 has 8 divisors (see below), whose sum is σ = 60751488. Its totient is φ = 30344544.

The previous prime is 45540203. The next prime is 45540223. The reversal of 45540213 is 31204554.

It is an interprime number because it is at equal distance from previous prime (45540203) and next prime (45540223).

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

It is not a de Polignac number, because 45540213 - 2⁶ = 45540149 is a prime.

It is a super-3 number, since 3×45540213³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45540203) 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, 9145 + ... + 13217.

It is an arithmetic number, because the mean of its divisors is an integer number (7593936).

Almost surely, 2^45540213 is an apocalyptic number.

It is an amenable number.

45540213 is a deficient number, since it is larger than the sum of its proper divisors (15211275).

45540213 is a wasteful number, since it uses less digits than its factorization.

45540213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 45540213 is about 6748.3489091777. The cubic root of 45540213 is about 357.1069911335.

Adding to 45540213 its reverse (31204554), we get a palindrome (76744767).

It can be divided in two parts, 45540 and 213, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 45540213 in words is "forty-five million, five hundred forty thousand, two hundred thirteen".