45409545 has 32 divisors (see below), whose sum is σ = 82919040. Its totient is φ = 23561280.

The previous prime is 45409543. The next prime is 45409547. The reversal of 45409545 is 54590454.

It is an interprime number because it is at equal distance from previous prime (45409543) and next prime (45409547).

It is not a de Polignac number, because 45409545 - 2¹ = 45409543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45409543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 450 + ... + 9540.

It is an arithmetic number, because the mean of its divisors is an integer number (2591220).

Almost surely, 2^45409545 is an apocalyptic number.

45409545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45409545 is a deficient number, since it is larger than the sum of its proper divisors (37509495).

45409545 is a wasteful number, since it uses less digits than its factorization.

45409545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142 (or 9136 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 45409545 is about 6738.6604751983. The cubic root of 45409545 is about 356.7651163093.

Adding to 45409545 its reverse (54590454), we get a palindrome (99999999).

It can be divided in two parts, 45409 and 545, that added together give a palindrome (45954).

The spelling of 45409545 in words is "forty-five million, four hundred nine thousand, five hundred forty-five".