1545047971 has 2 divisors, whose sum is σ = 1545047972. Its totient is φ = 1545047970.

The previous prime is 1545047957. The next prime is 1545048017. The reversal of 1545047971 is 1797405451.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1545047971 - 2⁹ = 1545047459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1545027971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772523985 + 772523986.

It is an arithmetic number, because the mean of its divisors is an integer number (772523986).

Almost surely, 2^1545047971 is an apocalyptic number.

1545047971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545047971 is an equidigital number, since it uses as much as digits as its factorization.

1545047971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 1545047971 is about 39307.0982266562. The cubic root of 1545047971 is about 1156.0607487442.

The spelling of 1545047971 in words is "one billion, five hundred forty-five million, forty-seven thousand, nine hundred seventy-one".