445257427 has 2 divisors, whose sum is σ = 445257428. Its totient is φ = 445257426.

The previous prime is 445257409. The next prime is 445257431. The reversal of 445257427 is 724752544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445257427 - 2¹⁹ = 444733139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445257427.

It is not a weakly prime, because it can be changed into another prime (445257467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222628713 + 222628714.

It is an arithmetic number, because the mean of its divisors is an integer number (222628714).

Almost surely, 2^445257427 is an apocalyptic number.

445257427 is a deficient number, since it is larger than the sum of its proper divisors (1).

445257427 is an equidigital number, since it uses as much as digits as its factorization.

445257427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313600, while the sum is 40.

The square root of 445257427 is about 21101.1238326303. The cubic root of 445257427 is about 763.6078612914.

The spelling of 445257427 in words is "four hundred forty-five million, two hundred fifty-seven thousand, four hundred twenty-seven".