45127993 has 2 divisors, whose sum is σ = 45127994. Its totient is φ = 45127992.

The previous prime is 45127991. The next prime is 45128023. The reversal of 45127993 is 39972154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42928704 + 2199289 = 6552^2 + 1483^2 .

It is a cyclic number.

It is not a de Polignac number, because 45127993 - 2¹ = 45127991 is a prime.

Together with 45127991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (45127991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22563996 + 22563997.

It is an arithmetic number, because the mean of its divisors is an integer number (22563997).

Almost surely, 2^45127993 is an apocalyptic number.

It is an amenable number.

45127993 is a deficient number, since it is larger than the sum of its proper divisors (1).

45127993 is an equidigital number, since it uses as much as digits as its factorization.

45127993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 45127993 is about 6717.7371934305. The cubic root of 45127993 is about 356.0262389657.

The spelling of 45127993 in words is "forty-five million, one hundred twenty-seven thousand, nine hundred ninety-three".