971521050 has 48 divisors (see below), whose sum is σ = 2419979040. Its totient is φ = 257931840.

The previous prime is 971521039. The next prime is 971521051. The reversal of 971521050 is 50125179.

971521050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 971520999 and 971521017.

It is not an unprimeable number, because it can be changed into a prime (971521051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20209 + ... + 48491.

It is an arithmetic number, because the mean of its divisors is an integer number (50416230).

Almost surely, 2^971521050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971521050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209989520).

971521050 is an abundant number, since it is smaller than the sum of its proper divisors (1448457990).

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

971521050 is a wasteful number, since it uses less digits than its factorization.

971521050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28527 (or 28522 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 971521050 is about 31169.2324255828. The cubic root of 971521050 is about 990.4154464914.

The spelling of 971521050 in words is "nine hundred seventy-one million, five hundred twenty-one thousand, fifty".