975449550 has 144 divisors (see below), whose sum is σ = 2666079360. Its totient is φ = 235350720.

The previous prime is 975449549. The next prime is 975449551. The reversal of 975449550 is 55944579.

975449550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (975449549) and next prime (975449551).

It is a self number, because there is not a number n which added to its sum of digits gives 975449550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (975449551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1507327 + ... + 1507973.

It is an arithmetic number, because the mean of its divisors is an integer number (18514440).

Almost surely, 2^975449550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 975449550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1333039680).

975449550 is an abundant number, since it is smaller than the sum of its proper divisors (1690629810).

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

975449550 is a wasteful number, since it uses less digits than its factorization.

975449550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 48.

The square root of 975449550 is about 31232.1877235649. The cubic root of 975449550 is about 991.7486186382.

The spelling of 975449550 in words is "nine hundred seventy-five million, four hundred forty-nine thousand, five hundred fifty".