45548521 has 4 divisors (see below), whose sum is σ = 45581200. Its totient is φ = 45515844.

The previous prime is 45548501. The next prime is 45548539. The reversal of 45548521 is 12584554.

It is a happy number.

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 45548521 - 2¹³ = 45540329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45548501) 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, 14151 + ... + 17068.

It is an arithmetic number, because the mean of its divisors is an integer number (11395300).

Almost surely, 2^45548521 is an apocalyptic number.

It is an amenable number.

45548521 is a deficient number, since it is larger than the sum of its proper divisors (32679).

45548521 is a wasteful number, since it uses less digits than its factorization.

45548521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32678.

The product of its digits is 32000, while the sum is 34.

The square root of 45548521 is about 6748.9644390825. The cubic root of 45548521 is about 357.1287057478.

The spelling of 45548521 in words is "forty-five million, five hundred forty-eight thousand, five hundred twenty-one".