477251491 has 2 divisors, whose sum is σ = 477251492. Its totient is φ = 477251490.

The previous prime is 477251473. The next prime is 477251497. The reversal of 477251491 is 194152774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 477251491 - 2⁵ = 477251459 is a prime.

It is not a weakly prime, because it can be changed into another prime (477251497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238625745 + 238625746.

It is an arithmetic number, because the mean of its divisors is an integer number (238625746).

Almost surely, 2^477251491 is an apocalyptic number.

477251491 is a deficient number, since it is larger than the sum of its proper divisors (1).

477251491 is an equidigital number, since it uses as much as digits as its factorization.

477251491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 40.

The square root of 477251491 is about 21846.0864000855. The cubic root of 477251491 is about 781.4762154432.

The spelling of 477251491 in words is "four hundred seventy-seven million, two hundred fifty-one thousand, four hundred ninety-one".