45072545 has 8 divisors (see below), whose sum is σ = 61813824. Its totient is φ = 30906864.

The previous prime is 45072523. The next prime is 45072553. The reversal of 45072545 is 54527054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45072545 - 2¹⁸ = 44810401 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643859 + ... + 643928.

It is an arithmetic number, because the mean of its divisors is an integer number (7726728).

Almost surely, 2^45072545 is an apocalyptic number.

It is an amenable number.

45072545 is a deficient number, since it is larger than the sum of its proper divisors (16741279).

45072545 is a wasteful number, since it uses less digits than its factorization.

45072545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287799.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 45072545 is about 6713.6089400560. The cubic root of 45072545 is about 355.8803647368.

Adding to 45072545 its reverse (54527054), we get a palindrome (99599599).

The spelling of 45072545 in words is "forty-five million, seventy-two thousand, five hundred forty-five".