9971254522 has 4 divisors (see below), whose sum is σ = 14956881786. Its totient is φ = 4985627260.

The previous prime is 9971254507. The next prime is 9971254523. The reversal of 9971254522 is 2254521799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2254521799 = 29 ⋅77742131.

It can be written as a sum of positive squares in only one way, i.e., 9350696601 + 620557921 = 96699^2 + 24911^2 .

It is not an unprimeable number, because it can be changed into a prime (9971254523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492813629 + ... + 2492813632.

Almost surely, 2^9971254522 is an apocalyptic number.

9971254522 is a deficient number, since it is larger than the sum of its proper divisors (4985627264).

9971254522 is a wasteful number, since it uses less digits than its factorization.

9971254522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985627263.

The product of its digits is 453600, while the sum is 46.

The square root of 9971254522 is about 99856.1691734667. The cubic root of 9971254522 is about 2152.3683670177.

The spelling of 9971254522 in words is "nine billion, nine hundred seventy-one million, two hundred fifty-four thousand, five hundred twenty-two".