727285457 has 2 divisors, whose sum is σ = 727285458. Its totient is φ = 727285456.

The previous prime is 727285453. The next prime is 727285459. The reversal of 727285457 is 754582727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724201921 + 3083536 = 26911^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 727285457 - 2² = 727285453 is a prime.

Together with 727285459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (727285453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363642728 + 363642729.

It is an arithmetic number, because the mean of its divisors is an integer number (363642729).

Almost surely, 2^727285457 is an apocalyptic number.

It is an amenable number.

727285457 is a deficient number, since it is larger than the sum of its proper divisors (1).

727285457 is an equidigital number, since it uses as much as digits as its factorization.

727285457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097600, while the sum is 47.

The square root of 727285457 is about 26968.2305129573. The cubic root of 727285457 is about 899.2938728766.

It can be divided in two parts, 7272 and 85457, that added together give a palindrome (92729).

The spelling of 727285457 in words is "seven hundred twenty-seven million, two hundred eighty-five thousand, four hundred fifty-seven".