45456709 has 2 divisors, whose sum is σ = 45456710. Its totient is φ = 45456708.

The previous prime is 45456707. The next prime is 45456731. The reversal of 45456709 is 90765454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32832900 + 12623809 = 5730^2 + 3553^2 .

It is a cyclic number.

It is not a de Polignac number, because 45456709 - 2¹ = 45456707 is a prime.

It is a super-2 number, since 2×45456709² = 4132624786221362, which contains 22 as substring.

Together with 45456707, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45456707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22728354 + 22728355.

It is an arithmetic number, because the mean of its divisors is an integer number (22728355).

Almost surely, 2^45456709 is an apocalyptic number.

It is an amenable number.

45456709 is a deficient number, since it is larger than the sum of its proper divisors (1).

45456709 is an equidigital number, since it uses as much as digits as its factorization.

45456709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 45456709 is about 6742.1590755484. The cubic root of 45456709 is about 356.8885899665. Note that the first 3 decimals are identical.

The spelling of 45456709 in words is "forty-five million, four hundred fifty-six thousand, seven hundred nine".