45621013 has 4 divisors (see below), whose sum is σ = 48304620. Its totient is φ = 42937408.

The previous prime is 45621011. The next prime is 45621019. The reversal of 45621013 is 31012654.

45621013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31012654 = 2 ⋅15506327.

It can be written as a sum of positive squares in 2 ways, for example, as 40985604 + 4635409 = 6402^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 45621013 - 2¹ = 45621011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45621011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341778 + ... + 1341811.

It is an arithmetic number, because the mean of its divisors is an integer number (12076155).

Almost surely, 2^45621013 is an apocalyptic number.

It is an amenable number.

45621013 is a deficient number, since it is larger than the sum of its proper divisors (2683607).

45621013 is a wasteful number, since it uses less digits than its factorization.

45621013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683606.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 45621013 is about 6754.3329056244. The cubic root of 45621013 is about 357.3180660996.

Adding to 45621013 its reverse (31012654), we get a palindrome (76633667).

The spelling of 45621013 in words is "forty-five million, six hundred twenty-one thousand, thirteen".