45252497021 has 2 divisors, whose sum is σ = 45252497022. Its totient is φ = 45252497020.

The previous prime is 45252496997. The next prime is 45252497051. The reversal of 45252497021 is 12079425254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37118260921 + 8134236100 = 192661^2 + 90190^2 .

It is a cyclic number.

It is not a de Polignac number, because 45252497021 - 2¹⁰ = 45252495997 is a prime.

It is a super-2 number, since 2×45252497021² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45252497021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45252497051) 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, 22626248510 + 22626248511.

It is an arithmetic number, because the mean of its divisors is an integer number (22626248511).

Almost surely, 2^45252497021 is an apocalyptic number.

It is an amenable number.

45252497021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45252497021 is an equidigital number, since it uses as much as digits as its factorization.

45252497021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 45252497021 in words is "forty-five billion, two hundred fifty-two million, four hundred ninety-seven thousand, twenty-one".