445256653 has 2 divisors, whose sum is σ = 445256654. Its totient is φ = 445256652.

The previous prime is 445256543. The next prime is 445256663. The reversal of 445256653 is 356652544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271491529 + 173765124 = 16477^2 + 13182^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445256653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445256663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222628326 + 222628327.

It is an arithmetic number, because the mean of its divisors is an integer number (222628327).

Almost surely, 2^445256653 is an apocalyptic number.

It is an amenable number.

445256653 is a deficient number, since it is larger than the sum of its proper divisors (1).

445256653 is an equidigital number, since it uses as much as digits as its factorization.

445256653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 40.

The square root of 445256653 is about 21101.1054923670. The cubic root of 445256653 is about 763.6074188262.

The spelling of 445256653 in words is "four hundred forty-five million, two hundred fifty-six thousand, six hundred fifty-three".