45148973 has 2 divisors, whose sum is σ = 45148974. Its totient is φ = 45148972.

The previous prime is 45148963. The next prime is 45148979. The reversal of 45148973 is 37984154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44649124 + 499849 = 6682^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 45148973 - 2¹⁴ = 45132589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45148973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45148979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22574486 + 22574487.

It is an arithmetic number, because the mean of its divisors is an integer number (22574487).

Almost surely, 2^45148973 is an apocalyptic number.

It is an amenable number.

45148973 is a deficient number, since it is larger than the sum of its proper divisors (1).

45148973 is an equidigital number, since it uses as much as digits as its factorization.

45148973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 45148973 is about 6719.2985497000. The cubic root of 45148973 is about 356.0814026072.

The spelling of 45148973 in words is "forty-five million, one hundred forty-eight thousand, nine hundred seventy-three".