2571403949 has 2 divisors, whose sum is σ = 2571403950. Its totient is φ = 2571403948.

The previous prime is 2571403937. The next prime is 2571403963. The reversal of 2571403949 is 9493041752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2417197225 + 154206724 = 49165^2 + 12418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2571403949 is a prime.

It is a super-2 number, since 2×2571403949² = 13224236537865589202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2571403909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285701974 + 1285701975.

It is an arithmetic number, because the mean of its divisors is an integer number (1285701975).

Almost surely, 2^2571403949 is an apocalyptic number.

It is an amenable number.

2571403949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2571403949 is an equidigital number, since it uses as much as digits as its factorization.

2571403949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2571403949 is about 50709.0125027100. The cubic root of 2571403949 is about 1370.0090483712.

The spelling of 2571403949 in words is "two billion, five hundred seventy-one million, four hundred three thousand, nine hundred forty-nine".