971500000 has 168 divisors, whose sum is σ = 2510124120. Its totient is φ = 369600000.

The previous prime is 971499983. The next prime is 971500027. The reversal of 971500000 is 5179.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 14499967 + ... + 14500033.

It is an arithmetic number, because the mean of its divisors is an integer number (14941215).

Almost surely, 2^971500000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255062060).

971500000 is an abundant number, since it is smaller than the sum of its proper divisors (1538624120).

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

971500000 is an frugal number, since it uses more digits than its factorization.

971500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 971500000 is about 31168.8947510174. The cubic root of 971500000 is about 990.4082933111.

Adding to 971500000 its reverse (5179), we get a palindrome (971505179).

The spelling of 971500000 in words is "nine hundred seventy-one million, five hundred thousand".