45242545 has 4 divisors (see below), whose sum is σ = 54291060. Its totient is φ = 36194032.

The previous prime is 45242531. The next prime is 45242563. The reversal of 45242545 is 54524254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54524254 = 2 ⋅27262127.

It can be written as a sum of positive squares in 2 ways, for example, as 23824161 + 21418384 = 4881^2 + 4628^2 .

It is a cyclic number.

It is not a de Polignac number, because 45242545 - 2⁹ = 45242033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524250 + ... + 4524259.

It is an arithmetic number, because the mean of its divisors is an integer number (13572765).

Almost surely, 2^45242545 is an apocalyptic number.

It is an amenable number.

45242545 is a deficient number, since it is larger than the sum of its proper divisors (9048515).

45242545 is an equidigital number, since it uses as much as digits as its factorization.

45242545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048514.

The product of its digits is 32000, while the sum is 31.

The square root of 45242545 is about 6726.2578749257. The cubic root of 45242545 is about 356.3272277429.

Adding to 45242545 its reverse (54524254), we get a palindrome (99766799).

The spelling of 45242545 in words is "forty-five million, two hundred forty-two thousand, five hundred forty-five".