45877649 has 4 divisors (see below), whose sum is σ = 45984036. Its totient is φ = 45771264.

The previous prime is 45877639. The next prime is 45877693. The reversal of 45877649 is 94677854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94677854 = 2 ⋅47338927.

It can be written as a sum of positive squares in 2 ways, for example, as 2739025 + 43138624 = 1655^2 + 6568^2 .

It is a cyclic number.

It is not a de Polignac number, because 45877649 - 2⁸ = 45877393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45877597 and 45877606.

It is not an unprimeable number, because it can be changed into a prime (45877619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52544 + ... + 53409.

It is an arithmetic number, because the mean of its divisors is an integer number (11496009).

Almost surely, 2^45877649 is an apocalyptic number.

It is an amenable number.

45877649 is a deficient number, since it is larger than the sum of its proper divisors (106387).

45877649 is a wasteful number, since it uses less digits than its factorization.

45877649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106386.

The product of its digits is 1693440, while the sum is 50.

The square root of 45877649 is about 6773.3041419975. The cubic root of 45877649 is about 357.9868314913.

The spelling of 45877649 in words is "forty-five million, eight hundred seventy-seven thousand, six hundred forty-nine".