45187469 has 2 divisors, whose sum is σ = 45187470. Its totient is φ = 45187468.

The previous prime is 45187463. The next prime is 45187477. The reversal of 45187469 is 96478154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40513225 + 4674244 = 6365^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 45187469 - 2⁸ = 45187213 is a prime.

It is a super-2 number, since 2×45187469² = 4083814709251922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45187463) 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, 22593734 + 22593735.

It is an arithmetic number, because the mean of its divisors is an integer number (22593735).

Almost surely, 2^45187469 is an apocalyptic number.

It is an amenable number.

45187469 is a deficient number, since it is larger than the sum of its proper divisors (1).

45187469 is an equidigital number, since it uses as much as digits as its factorization.

45187469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 45187469 is about 6722.1625240692. The cubic root of 45187469 is about 356.1825774120.

The spelling of 45187469 in words is "forty-five million, one hundred eighty-seven thousand, four hundred sixty-nine".