45122013 has 12 divisors (see below), whose sum is σ = 65300508. Its totient is φ = 30024000.

The previous prime is 45122009. The next prime is 45122023. The reversal of 45122013 is 31022154.

It can be written as a sum of positive squares in 2 ways, for example, as 5846724 + 39275289 = 2418^2 + 6267^2 .

It is not a de Polignac number, because 45122013 - 2² = 45122009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45122003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (5441709).

Almost surely, 2^45122013 is an apocalyptic number.

It is an amenable number.

45122013 is a deficient number, since it is larger than the sum of its proper divisors (20178495).

45122013 is a wasteful number, since it uses less digits than its factorization.

45122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9564 (or 9561 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 45122013 is about 6717.2920883344. The cubic root of 45122013 is about 356.0105123563.

Adding to 45122013 its reverse (31022154), we get a palindrome (76144167).

The spelling of 45122013 in words is "forty-five million, one hundred twenty-two thousand, thirteen".