45830821 has 2 divisors, whose sum is σ = 45830822. Its totient is φ = 45830820.

The previous prime is 45830809. The next prime is 45830833. The reversal of 45830821 is 12803854.

It is a balanced prime because it is at equal distance from previous prime (45830809) and next prime (45830833).

It can be written as a sum of positive squares in only one way, i.e., 45360225 + 470596 = 6735^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 45830821 - 2⁷ = 45830693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45830891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22915410 + 22915411.

It is an arithmetic number, because the mean of its divisors is an integer number (22915411).

Almost surely, 2^45830821 is an apocalyptic number.

It is an amenable number.

45830821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45830821 is an equidigital number, since it uses as much as digits as its factorization.

45830821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 45830821 is about 6769.8464532070. The cubic root of 45830821 is about 357.8649891953.

It can be divided in two parts, 458308 and 21, that added together give a square (458329 = 677²).

The spelling of 45830821 in words is "forty-five million, eight hundred thirty thousand, eight hundred twenty-one".