71497922 has 8 divisors (see below), whose sum is σ = 107715900. Its totient is φ = 35592624.

The previous prime is 71497919. The next prime is 71497981. The reversal of 71497922 is 22979417.

It can be written as a sum of positive squares in 2 ways, for example, as 62742241 + 8755681 = 7921^2 + 2959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71497922² = 10223905700636168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71497922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77597 + ... + 78512.

Almost surely, 2^71497922 is an apocalyptic number.

71497922 is a deficient number, since it is larger than the sum of its proper divisors (36217978).

71497922 is a wasteful number, since it uses less digits than its factorization.

71497922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156340.

The product of its digits is 63504, while the sum is 41.

The square root of 71497922 is about 8455.6443870352. The cubic root of 71497922 is about 415.0475041184.

The spelling of 71497922 in words is "seventy-one million, four hundred ninety-seven thousand, nine hundred twenty-two".