977075321 has 2 divisors, whose sum is σ = 977075322. Its totient is φ = 977075320.

The previous prime is 977075293. The next prime is 977075353. The reversal of 977075321 is 123570779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 871725625 + 105349696 = 29525^2 + 10264^2 .

It is a cyclic number.

It is not a de Polignac number, because 977075321 - 2⁶ = 977075257 is a prime.

It is equal to p_49740467 and since 977075321 and 49740467 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (977075371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488537660 + 488537661.

It is an arithmetic number, because the mean of its divisors is an integer number (488537661).

Almost surely, 2^977075321 is an apocalyptic number.

It is an amenable number.

977075321 is a deficient number, since it is larger than the sum of its proper divisors (1).

977075321 is an equidigital number, since it uses as much as digits as its factorization.

977075321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92610, while the sum is 41.

The square root of 977075321 is about 31258.2040590946. The cubic root of 977075321 is about 992.2992916438.

The spelling of 977075321 in words is "nine hundred seventy-seven million, seventy-five thousand, three hundred twenty-one".