45664519 has 4 divisors (see below), whose sum is σ = 47137600. Its totient is φ = 44191440.

The previous prime is 45664517. The next prime is 45664537. The reversal of 45664519 is 91546654.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91546654 = 2 ⋅45773327.

It is a cyclic number.

It is not a de Polignac number, because 45664519 - 2¹ = 45664517 is a prime.

It is a super-2 number, since 2×45664519² = 4170496591002722, 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 (45664517) 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, 736494 + ... + 736555.

It is an arithmetic number, because the mean of its divisors is an integer number (11784400).

Almost surely, 2^45664519 is an apocalyptic number.

45664519 is a deficient number, since it is larger than the sum of its proper divisors (1473081).

45664519 is a wasteful number, since it uses less digits than its factorization.

45664519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473080.

The product of its digits is 129600, while the sum is 40.

The square root of 45664519 is about 6757.5527374931. The cubic root of 45664519 is about 357.4316142198.

The spelling of 45664519 in words is "forty-five million, six hundred sixty-four thousand, five hundred nineteen".