45487649 has 2 divisors, whose sum is σ = 45487650. Its totient is φ = 45487648.

The previous prime is 45487609. The next prime is 45487657. The reversal of 45487649 is 94678454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45468049 + 19600 = 6743^2 + 140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45487649 is a prime.

It is not a weakly prime, because it can be changed into another prime (45487609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22743824 + 22743825.

It is an arithmetic number, because the mean of its divisors is an integer number (22743825).

Almost surely, 2^45487649 is an apocalyptic number.

It is an amenable number.

45487649 is a deficient number, since it is larger than the sum of its proper divisors (1).

45487649 is an equidigital number, since it uses as much as digits as its factorization.

45487649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 47.

The square root of 45487649 is about 6744.4532024472. The cubic root of 45487649 is about 356.9695433901.

The spelling of 45487649 in words is "forty-five million, four hundred eighty-seven thousand, six hundred forty-nine".