45440513 has 4 divisors (see below), whose sum is σ = 46906368. Its totient is φ = 43974660.

The previous prime is 45440503. The next prime is 45440531. The reversal of 45440513 is 31504454.

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.

It is a cyclic number.

It is not a de Polignac number, because 45440513 - 2⁶ = 45440449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45440503) 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, 732881 + ... + 732942.

It is an arithmetic number, because the mean of its divisors is an integer number (11726592).

Almost surely, 2^45440513 is an apocalyptic number.

It is an amenable number.

45440513 is a deficient number, since it is larger than the sum of its proper divisors (1465855).

45440513 is a wasteful number, since it uses less digits than its factorization.

45440513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465854.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 45440513 is about 6740.9578696206. The cubic root of 45440513 is about 356.8461990533.

Adding to 45440513 its reverse (31504454), we get a palindrome (76944967).

The spelling of 45440513 in words is "forty-five million, four hundred forty thousand, five hundred thirteen".