45797821 has 2 divisors, whose sum is σ = 45797822. Its totient is φ = 45797820.

The previous prime is 45797753. The next prime is 45797827. The reversal of 45797821 is 12879754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40896025 + 4901796 = 6395^2 + 2214^2 .

It is a cyclic number.

It is not a de Polignac number, because 45797821 - 2⁹ = 45797309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45797827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22898910 + 22898911.

It is an arithmetic number, because the mean of its divisors is an integer number (22898911).

Almost surely, 2^45797821 is an apocalyptic number.

It is an amenable number.

45797821 is a deficient number, since it is larger than the sum of its proper divisors (1).

45797821 is an equidigital number, since it uses as much as digits as its factorization.

45797821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 45797821 is about 6767.4087359934. The cubic root of 45797821 is about 357.7790762662.

The spelling of 45797821 in words is "forty-five million, seven hundred ninety-seven thousand, eight hundred twenty-one".