45940013 has 4 divisors (see below), whose sum is σ = 52502880. Its totient is φ = 39377148.

The previous prime is 45939991. The next prime is 45940019. The reversal of 45940013 is 31004954.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31004954 = 2 ⋅15502477.

It is a cyclic number.

It is not a de Polignac number, because 45940013 - 2¹⁰ = 45938989 is a prime.

It is a super-2 number, since 2×45940013² = 4220969588880338, 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 (45940019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3281423 + ... + 3281436.

It is an arithmetic number, because the mean of its divisors is an integer number (13125720).

Almost surely, 2^45940013 is an apocalyptic number.

It is an amenable number.

45940013 is a deficient number, since it is larger than the sum of its proper divisors (6562867).

45940013 is an equidigital number, since it uses as much as digits as its factorization.

45940013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562866.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 45940013 is about 6777.9062401305. The cubic root of 45940013 is about 358.1489684127.

Adding to 45940013 its reverse (31004954), we get a palindrome (76944967).

The spelling of 45940013 in words is "forty-five million, nine hundred forty thousand, thirteen".