1623054553 has 2 divisors, whose sum is σ = 1623054554. Its totient is φ = 1623054552.

The previous prime is 1623054551. The next prime is 1623054623. The reversal of 1623054553 is 3554503261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1444912144 + 178142409 = 38012^2 + 13347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623054553 - 2¹ = 1623054551 is a prime.

Together with 1623054551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1623054551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811527276 + 811527277.

It is an arithmetic number, because the mean of its divisors is an integer number (811527277).

Almost surely, 2^1623054553 is an apocalyptic number.

It is an amenable number.

1623054553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623054553 is an equidigital number, since it uses as much as digits as its factorization.

1623054553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 1623054553 is about 40287.1512147484. The cubic root of 1623054553 is about 1175.1979875818.

The spelling of 1623054553 in words is "one billion, six hundred twenty-three million, fifty-four thousand, five hundred fifty-three".