455556649 has 2 divisors, whose sum is σ = 455556650. Its totient is φ = 455556648.

The previous prime is 455556643. The next prime is 455556659. The reversal of 455556649 is 946655554.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385533225 + 70023424 = 19635^2 + 8368^2 .

It is a cyclic number.

It is not a de Polignac number, because 455556649 - 2¹¹ = 455554601 is a prime.

It is not a weakly prime, because it can be changed into another prime (455556643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227778324 + 227778325.

It is an arithmetic number, because the mean of its divisors is an integer number (227778325).

Almost surely, 2^455556649 is an apocalyptic number.

It is an amenable number.

455556649 is a deficient number, since it is larger than the sum of its proper divisors (1).

455556649 is an equidigital number, since it uses as much as digits as its factorization.

455556649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240000, while the sum is 49.

The square root of 455556649 is about 21343.7730731940. The cubic root of 455556649 is about 769.4506955400.

The spelling of 455556649 in words is "four hundred fifty-five million, five hundred fifty-six thousand, six hundred forty-nine".