445551413 has 2 divisors, whose sum is σ = 445551414. Its totient is φ = 445551412.

The previous prime is 445551409. The next prime is 445551427. The reversal of 445551413 is 314155544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 440916004 + 4635409 = 20998^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 445551413 - 2² = 445551409 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 445551413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445551473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222775706 + 222775707.

It is an arithmetic number, because the mean of its divisors is an integer number (222775707).

Almost surely, 2^445551413 is an apocalyptic number.

It is an amenable number.

445551413 is a deficient number, since it is larger than the sum of its proper divisors (1).

445551413 is an equidigital number, since it uses as much as digits as its factorization.

445551413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 32.

The square root of 445551413 is about 21108.0888050055. The cubic root of 445551413 is about 763.7758844154.

The spelling of 445551413 in words is "four hundred forty-five million, five hundred fifty-one thousand, four hundred thirteen".