71156453 has 4 divisors (see below), whose sum is σ = 71189580. Its totient is φ = 71123328.

The previous prime is 71156389. The next prime is 71156473. The reversal of 71156453 is 35465117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27899524 + 43256929 = 5282^2 + 6577^2 .

It is a cyclic number.

It is not a de Polignac number, because 71156453 - 2⁶ = 71156389 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 (71156473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13100 + ... + 17717.

It is an arithmetic number, because the mean of its divisors is an integer number (17797395).

Almost surely, 2^71156453 is an apocalyptic number.

It is an amenable number.

71156453 is a deficient number, since it is larger than the sum of its proper divisors (33127).

71156453 is a wasteful number, since it uses less digits than its factorization.

71156453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33126.

The product of its digits is 12600, while the sum is 32.

The square root of 71156453 is about 8435.4284419939. The cubic root of 71156453 is about 414.3857036213.

Adding to 71156453 its sum of digits (32), we get a triangular number (71156485 = T₁₁₉₂₉).

The spelling of 71156453 in words is "seventy-one million, one hundred fifty-six thousand, four hundred fifty-three".