45662021 has 2 divisors, whose sum is σ = 45662022. Its totient is φ = 45662020.

The previous prime is 45661981. The next prime is 45662027. The reversal of 45662021 is 12026654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36120100 + 9541921 = 6010^2 + 3089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45662021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45662027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22831010 + 22831011.

It is an arithmetic number, because the mean of its divisors is an integer number (22831011).

Almost surely, 2^45662021 is an apocalyptic number.

It is an amenable number.

45662021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45662021 is an equidigital number, since it uses as much as digits as its factorization.

45662021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 45662021 is about 6757.3679047392. The cubic root of 45662021 is about 357.4250965377.

Adding to 45662021 its reverse (12026654), we get a palindrome (57688675).

The spelling of 45662021 in words is "forty-five million, six hundred sixty-two thousand, twenty-one".