45159421 has 2 divisors, whose sum is σ = 45159422. Its totient is φ = 45159420.

The previous prime is 45159403. The next prime is 45159427. The reversal of 45159421 is 12495154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41139396 + 4020025 = 6414^2 + 2005^2 .

It is a cyclic number.

It is not a de Polignac number, because 45159421 - 2¹¹ = 45157373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45159427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22579710 + 22579711.

It is an arithmetic number, because the mean of its divisors is an integer number (22579711).

Almost surely, 2^45159421 is an apocalyptic number.

It is an amenable number.

45159421 is a deficient number, since it is larger than the sum of its proper divisors (1).

45159421 is an equidigital number, since it uses as much as digits as its factorization.

45159421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The square root of 45159421 is about 6720.0759668325. The cubic root of 45159421 is about 356.1088676214.

The spelling of 45159421 in words is "forty-five million, one hundred fifty-nine thousand, four hundred twenty-one".