45549547 has 4 divisors (see below), whose sum is σ = 45645120. Its totient is φ = 45453976.

The previous prime is 45549541. The next prime is 45549557. The reversal of 45549547 is 74594554.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45549547 is a prime.

It is a super-2 number, since 2×45549547² = 4149522463810418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45549541) 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, 47068 + ... + 48025.

It is an arithmetic number, because the mean of its divisors is an integer number (11411280).

Almost surely, 2^45549547 is an apocalyptic number.

45549547 is a deficient number, since it is larger than the sum of its proper divisors (95573).

45549547 is an equidigital number, since it uses as much as digits as its factorization.

45549547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95572.

The product of its digits is 504000, while the sum is 43.

The square root of 45549547 is about 6749.0404503159. The cubic root of 45549547 is about 357.1313872202.

The spelling of 45549547 in words is "forty-five million, five hundred forty-nine thousand, five hundred forty-seven".