45523813 has 2 divisors, whose sum is σ = 45523814. Its totient is φ = 45523812.

The previous prime is 45523811. The next prime is 45523847. The reversal of 45523813 is 31832554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 3104644 = 6513^2 + 1762^2 .

It is a cyclic number.

It is not a de Polignac number, because 45523813 - 2¹ = 45523811 is a prime.

Together with 45523811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45523811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22761906 + 22761907.

It is an arithmetic number, because the mean of its divisors is an integer number (22761907).

Almost surely, 2^45523813 is an apocalyptic number.

It is an amenable number.

45523813 is a deficient number, since it is larger than the sum of its proper divisors (1).

45523813 is an equidigital number, since it uses as much as digits as its factorization.

45523813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 45523813 is about 6747.1336877225. The cubic root of 45523813 is about 357.0641187106.

The spelling of 45523813 in words is "forty-five million, five hundred twenty-three thousand, eight hundred thirteen".