71482157 has 4 divisors (see below), whose sum is σ = 71657340. Its totient is φ = 71306976.

The previous prime is 71482139. The next prime is 71482163. The reversal of 71482157 is 75128417.

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 69538921 + 1943236 = 8339^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 71482157 - 2¹⁶ = 71416621 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 (71482457) 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 in 3 ways as a sum of consecutive naturals, for example, 86978 + ... + 87795.

It is an arithmetic number, because the mean of its divisors is an integer number (17914335).

Almost surely, 2^71482157 is an apocalyptic number.

It is an amenable number.

71482157 is a deficient number, since it is larger than the sum of its proper divisors (175183).

71482157 is a wasteful number, since it uses less digits than its factorization.

71482157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175182.

The product of its digits is 15680, while the sum is 35.

The square root of 71482157 is about 8454.7121181031. The cubic root of 71482157 is about 415.0169964491.

The spelling of 71482157 in words is "seventy-one million, four hundred eighty-two thousand, one hundred fifty-seven".