99971056 has 10 divisors (see below), whose sum is σ = 193693952. Its totient is φ = 49985520.

The previous prime is 99971051. The next prime is 99971057. The reversal of 99971056 is 65017999.

It is a junction number, because it is equal to n+sod(n) for n = 99970997 and 99971015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99971051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3124080 + ... + 3124111.

Almost surely, 2^99971056 is an apocalyptic number.

It is an amenable number.

99971056 is a deficient number, since it is larger than the sum of its proper divisors (93722896).

99971056 is a wasteful number, since it uses less digits than its factorization.

99971056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248199 (or 6248193 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 99971056 is about 9998.5526952655. The cubic root of 99971056 is about 464.1140969909.

The spelling of 99971056 in words is "ninety-nine million, nine hundred seventy-one thousand, fifty-six".