45838781 has 4 divisors (see below), whose sum is σ = 45913692. Its totient is φ = 45763872.

The previous prime is 45838769. The next prime is 45838823. The reversal of 45838781 is 18783854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18783854 = 2 ⋅9391927.

It can be written as a sum of positive squares in 2 ways, for example, as 828100 + 45010681 = 910^2 + 6709^2 .

It is a cyclic number.

It is not a de Polignac number, because 45838781 - 2⁶ = 45838717 is a prime.

It is a super-2 number, since 2×45838781² = 4202387687131922, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45838721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36530 + ... + 37763.

It is an arithmetic number, because the mean of its divisors is an integer number (11478423).

Almost surely, 2^45838781 is an apocalyptic number.

It is an amenable number.

45838781 is a deficient number, since it is larger than the sum of its proper divisors (74911).

45838781 is an equidigital number, since it uses as much as digits as its factorization.

45838781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74910.

The product of its digits is 215040, while the sum is 44.

The square root of 45838781 is about 6770.4343287562. The cubic root of 45838781 is about 357.8857062612.

The spelling of 45838781 in words is "forty-five million, eight hundred thirty-eight thousand, seven hundred eighty-one".