71155053 has 6 divisors (see below), whose sum is σ = 102779534. Its totient is φ = 47436696.

The previous prime is 71155027. The next prime is 71155127. The reversal of 71155053 is 35055117.

It can be written as a sum of positive squares in only one way, i.e., 70610409 + 544644 = 8403^2 + 738^2 .

It is not a de Polignac number, because 71155053 - 2⁶ = 71154989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71155453) 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 in 5 ways as a sum of consecutive naturals, for example, 3953050 + ... + 3953067.

Almost surely, 2^71155053 is an apocalyptic number.

It is an amenable number.

71155053 is a deficient number, since it is larger than the sum of its proper divisors (31624481).

71155053 is a wasteful number, since it uses less digits than its factorization.

71155053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906123 (or 7906120 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 71155053 is about 8435.3454582489. The cubic root of 71155053 is about 414.3829859302.

The spelling of 71155053 in words is "seventy-one million, one hundred fifty-five thousand, fifty-three".