623055481 has 2 divisors, whose sum is σ = 623055482. Its totient is φ = 623055480.

The previous prime is 623055463. The next prime is 623055493. The reversal of 623055481 is 184550326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620757225 + 2298256 = 24915^2 + 1516^2 .

It is a cyclic number.

It is not a de Polignac number, because 623055481 - 2¹¹ = 623053433 is a prime.

It is a super-2 number, since 2×623055481² = 776396264808282722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (623055421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311527740 + 311527741.

It is an arithmetic number, because the mean of its divisors is an integer number (311527741).

Almost surely, 2^623055481 is an apocalyptic number.

It is an amenable number.

623055481 is a deficient number, since it is larger than the sum of its proper divisors (1).

623055481 is an equidigital number, since it uses as much as digits as its factorization.

623055481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 623055481 is about 24961.0793236190. The cubic root of 623055481 is about 854.1003639904.

The spelling of 623055481 in words is "six hundred twenty-three million, fifty-five thousand, four hundred eighty-one".