975281281 has 8 divisors (see below), whose sum is σ = 1086520680. Its totient is φ = 869215872.

The previous prime is 975281233. The next prime is 975281311. The reversal of 975281281 is 182182579.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8071281 + 967210000 = 2841^2 + 31100^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 975281281 - 2¹¹ = 975279233 is a prime.

It is a super-2 number, since 2×975281281² = 1902347154138001922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (975281201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293100 + ... + 1293853.

It is an arithmetic number, because the mean of its divisors is an integer number (135815085).

Almost surely, 2^975281281 is an apocalyptic number.

It is an amenable number.

975281281 is a deficient number, since it is larger than the sum of its proper divisors (111239399).

975281281 is a wasteful number, since it uses less digits than its factorization.

975281281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586995.

The product of its digits is 80640, while the sum is 43.

The square root of 975281281 is about 31229.4937679111. The cubic root of 975281281 is about 991.6915884736.

The spelling of 975281281 in words is "nine hundred seventy-five million, two hundred eighty-one thousand, two hundred eighty-one".