671450531 has 2 divisors, whose sum is σ = 671450532. Its totient is φ = 671450530.

The previous prime is 671450509. The next prime is 671450539. The reversal of 671450531 is 135054176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671450531 - 2¹⁰ = 671449507 is a prime.

It is a super-2 number, since 2×671450531² = 901691631160363922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (671450539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335725265 + 335725266.

It is an arithmetic number, because the mean of its divisors is an integer number (335725266).

Almost surely, 2^671450531 is an apocalyptic number.

671450531 is a deficient number, since it is larger than the sum of its proper divisors (1).

671450531 is an equidigital number, since it uses as much as digits as its factorization.

671450531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 671450531 is about 25912.3625129011. The cubic root of 671450531 is about 875.6650317298.

The spelling of 671450531 in words is "six hundred seventy-one million, four hundred fifty thousand, five hundred thirty-one".