45012013 has 4 divisors (see below), whose sum is σ = 46058848. Its totient is φ = 43965180.

The previous prime is 45011983. The next prime is 45012029. The reversal of 45012013 is 31021054.

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: 31021054 = 2 ⋅15510527.

It is a cyclic number.

It is not a de Polignac number, because 45012013 - 2¹³ = 45003821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45012053) 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, 523353 + ... + 523438.

It is an arithmetic number, because the mean of its divisors is an integer number (11514712).

Almost surely, 2^45012013 is an apocalyptic number.

45012013 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

45012013 is a deficient number, since it is larger than the sum of its proper divisors (1046835).

45012013 is a wasteful number, since it uses less digits than its factorization.

45012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046834.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 45012013 is about 6709.0992689034. The cubic root of 45012013 is about 355.7209787139.

Adding to 45012013 its reverse (31021054), we get a palindrome (76033067).

The spelling of 45012013 in words is "forty-five million, twelve thousand, thirteen".