45524821 has 4 divisors (see below), whose sum is σ = 45538444. Its totient is φ = 45511200.

The previous prime is 45524807. The next prime is 45524851. The reversal of 45524821 is 12842554.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 23902321 + 21622500 = 4889^2 + 4650^2 .

It is a cyclic number.

It is not a de Polignac number, because 45524821 - 2⁵ = 45524789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45524851) 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, 2011 + ... + 9751.

It is an arithmetic number, because the mean of its divisors is an integer number (11384611).

Almost surely, 2^45524821 is an apocalyptic number.

It is an amenable number.

45524821 is a deficient number, since it is larger than the sum of its proper divisors (13623).

45524821 is an equidigital number, since it uses as much as digits as its factorization.

45524821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13622.

The product of its digits is 12800, while the sum is 31.

The square root of 45524821 is about 6747.2083856955. The cubic root of 45524821 is about 357.0667540930.

The spelling of 45524821 in words is "forty-five million, five hundred twenty-four thousand, eight hundred twenty-one".