4542545 has 12 divisors (see below), whose sum is σ = 6341364. Its totient is φ = 3114720.

The previous prime is 4542529. The next prime is 4542547. The reversal of 4542545 is 5452454.

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 2660161 = 1372^2 + 1631^2 .

It is not a de Polignac number, because 4542545 - 2⁴ = 4542529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4542547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9026 + ... + 9515.

It is an arithmetic number, because the mean of its divisors is an integer number (528447).

Almost surely, 2^4542545 is an apocalyptic number.

It is an amenable number.

4542545 is a deficient number, since it is larger than the sum of its proper divisors (1798819).

4542545 is a wasteful number, since it uses less digits than its factorization.

4542545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18560 (or 18553 counting only the distinct ones).

The product of its digits is 16000, while the sum is 29.

The square root of 4542545 is about 2131.3247054356. The cubic root of 4542545 is about 165.6150294223.

Adding to 4542545 its reverse (5452454), we get a palindrome (9994999).

Subtracting 4542545 from its reverse (5452454), we obtain a palindrome (909909).

The spelling of 4542545 in words is "four million, five hundred forty-two thousand, five hundred forty-five".