71497056 has 24 divisors (see below), whose sum is σ = 187680024. Its totient is φ = 23832320.

The previous prime is 71497039. The next prime is 71497091. The reversal of 71497056 is 65079417.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×71497056² = 10223658033334272, which contains 22 as substring.

It is a congruent number.

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, 372285 + ... + 372476.

It is an arithmetic number, because the mean of its divisors is an integer number (7820001).

Almost surely, 2^71497056 is an apocalyptic number.

It is an amenable number.

71497056 is an abundant number, since it is smaller than the sum of its proper divisors (116182968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71497056 is a wasteful number, since it uses less digits than its factorization.

71497056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744774 (or 744766 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 71497056 is about 8455.5931784825. The cubic root of 71497056 is about 415.0458283933.

The spelling of 71497056 in words is "seventy-one million, four hundred ninety-seven thousand, fifty-six".