45537549 has 4 divisors (see below), whose sum is σ = 60716736. Its totient is φ = 30358364.

The previous prime is 45537533. The next prime is 45537581. The reversal of 45537549 is 94573554.

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 45537549 - 2⁴ = 45537533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45537549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45537589) 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, 7589589 + ... + 7589594.

It is an arithmetic number, because the mean of its divisors is an integer number (15179184).

Almost surely, 2^45537549 is an apocalyptic number.

It is an amenable number.

45537549 is a deficient number, since it is larger than the sum of its proper divisors (15179187).

45537549 is a wasteful number, since it uses less digits than its factorization.

45537549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15179186.

The product of its digits is 378000, while the sum is 42.

The square root of 45537549 is about 6748.1515246770. The cubic root of 45537549 is about 357.1000276792.

The spelling of 45537549 in words is "forty-five million, five hundred thirty-seven thousand, five hundred forty-nine".