45021653 has 2 divisors, whose sum is σ = 45021654. Its totient is φ = 45021652.

The previous prime is 45021643. The next prime is 45021673. The reversal of 45021653 is 35612054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 2745649 = 6502^2 + 1657^2 .

It is a cyclic number.

It is not a de Polignac number, because 45021653 - 2⁶ = 45021589 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 (45021643) 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 as a sum of consecutive naturals, namely, 22510826 + 22510827.

It is an arithmetic number, because the mean of its divisors is an integer number (22510827).

Almost surely, 2^45021653 is an apocalyptic number.

It is an amenable number.

45021653 is a deficient number, since it is larger than the sum of its proper divisors (1).

45021653 is an equidigital number, since it uses as much as digits as its factorization.

45021653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 45021653 is about 6709.8176577311. The cubic root of 45021653 is about 355.7463712349.

The spelling of 45021653 in words is "forty-five million, twenty-one thousand, six hundred fifty-three".