975221347 has 4 divisors (see below), whose sum is σ = 976258656. Its totient is φ = 974184040.

The previous prime is 975221329. The next prime is 975221353. The reversal of 975221347 is 743122579.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-975221347 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (975221747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517243 + ... + 519124.

It is an arithmetic number, because the mean of its divisors is an integer number (244064664).

Almost surely, 2^975221347 is an apocalyptic number.

975221347 is a deficient number, since it is larger than the sum of its proper divisors (1037309).

975221347 is a wasteful number, since it uses less digits than its factorization.

975221347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037308.

The product of its digits is 105840, while the sum is 40.

The square root of 975221347 is about 31228.5341794968. The cubic root of 975221347 is about 991.6712739031.

The spelling of 975221347 in words is "nine hundred seventy-five million, two hundred twenty-one thousand, three hundred forty-seven".