45661519 has 4 divisors (see below), whose sum is σ = 45694440. Its totient is φ = 45628600.

The previous prime is 45661513. The next prime is 45661529. The reversal of 45661519 is 91516654.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45661519 - 2⁷ = 45661391 is a prime.

It is a super-2 number, since 2×45661519² = 4169948634774722, 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 (45661513) 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, 14284 + ... + 17185.

It is an arithmetic number, because the mean of its divisors is an integer number (11423610).

Almost surely, 2^45661519 is an apocalyptic number.

45661519 is a deficient number, since it is larger than the sum of its proper divisors (32921).

45661519 is a wasteful number, since it uses less digits than its factorization.

45661519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32920.

The product of its digits is 32400, while the sum is 37.

The square root of 45661519 is about 6757.3307599969. The cubic root of 45661519 is about 357.4237867106.

The spelling of 45661519 in words is "forty-five million, six hundred sixty-one thousand, five hundred nineteen".