45216949 has 2 divisors, whose sum is σ = 45216950. Its totient is φ = 45216948.

The previous prime is 45216943. The next prime is 45217013. The reversal of 45216949 is 94961254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29866225 + 15350724 = 5465^2 + 3918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45216949 is a prime.

It is a super-3 number, since 3×45216949³ (a number of 24 digits) contains 333 as substring.

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 (45216943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22608474 + 22608475.

It is an arithmetic number, because the mean of its divisors is an integer number (22608475).

Almost surely, 2^45216949 is an apocalyptic number.

It is an amenable number.

45216949 is a deficient number, since it is larger than the sum of its proper divisors (1).

45216949 is an equidigital number, since it uses as much as digits as its factorization.

45216949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 45216949 is about 6724.3549132984. The cubic root of 45216949 is about 356.2600176110.

The spelling of 45216949 in words is "forty-five million, two hundred sixteen thousand, nine hundred forty-nine".