45072811 has 4 divisors (see below), whose sum is σ = 51511792. Its totient is φ = 38633832.

The previous prime is 45072803. The next prime is 45072851. The reversal of 45072811 is 11827054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11827054 = 2 ⋅5913527.

It is a cyclic number.

It is not a de Polignac number, because 45072811 - 2³ = 45072803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45072811.

It is not an unprimeable number, because it can be changed into a prime (45072851) 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, 3219480 + ... + 3219493.

It is an arithmetic number, because the mean of its divisors is an integer number (12877948).

Almost surely, 2^45072811 is an apocalyptic number.

45072811 is a deficient number, since it is larger than the sum of its proper divisors (6438981).

45072811 is an equidigital number, since it uses as much as digits as its factorization.

45072811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6438980.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 45072811 is about 6713.6287505342. The cubic root of 45072811 is about 355.8810648230.

Adding to 45072811 its reverse (11827054), we get a palindrome (56899865).

The spelling of 45072811 in words is "forty-five million, seventy-two thousand, eight hundred eleven".