71253019 has 2 divisors, whose sum is σ = 71253020. Its totient is φ = 71253018.

The previous prime is 71252981. The next prime is 71253043. The reversal of 71253019 is 91035217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71253019 - 2¹³ = 71244827 is a prime.

It is a super-2 number, since 2×71253019² = 10153985433228722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71253079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35626509 + 35626510.

It is an arithmetic number, because the mean of its divisors is an integer number (35626510).

Almost surely, 2^71253019 is an apocalyptic number.

71253019 is a deficient number, since it is larger than the sum of its proper divisors (1).

71253019 is an equidigital number, since it uses as much as digits as its factorization.

71253019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 71253019 is about 8441.1503362990. The cubic root of 71253019 is about 414.5730723475.

The spelling of 71253019 in words is "seventy-one million, two hundred fifty-three thousand, nineteen".