71309053 has 2 divisors, whose sum is σ = 71309054. Its totient is φ = 71309052.

The previous prime is 71309047. The next prime is 71309081. The reversal of 71309053 is 35090317.

It is an a-pointer prime, because the next prime (71309081) can be obtained adding 71309053 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 34609689 = 6058^2 + 5883^2 .

It is an emirp because it is prime and its reverse (35090317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71309053 - 2¹³ = 71300861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71309003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35654526 + 35654527.

It is an arithmetic number, because the mean of its divisors is an integer number (35654527).

Almost surely, 2^71309053 is an apocalyptic number.

It is an amenable number.

71309053 is a deficient number, since it is larger than the sum of its proper divisors (1).

71309053 is an equidigital number, since it uses as much as digits as its factorization.

71309053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 71309053 is about 8444.4687813977. The cubic root of 71309053 is about 414.6817185075.

The spelling of 71309053 in words is "seventy-one million, three hundred nine thousand, fifty-three".