977545523 has 2 divisors, whose sum is σ = 977545524. Its totient is φ = 977545522.

The previous prime is 977545519. The next prime is 977545549. The reversal of 977545523 is 325545779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 977545523 - 2² = 977545519 is a prime.

It is equal to p_49763189 and since 977545523 and 49763189 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 (977545223) 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 as a sum of consecutive naturals, namely, 488772761 + 488772762.

It is an arithmetic number, because the mean of its divisors is an integer number (488772762).

Almost surely, 2^977545523 is an apocalyptic number.

977545523 is a deficient number, since it is larger than the sum of its proper divisors (1).

977545523 is an equidigital number, since it uses as much as digits as its factorization.

977545523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1323000, while the sum is 47.

The square root of 977545523 is about 31265.7244118859. The cubic root of 977545523 is about 992.4584422151.

The spelling of 977545523 in words is "nine hundred seventy-seven million, five hundred forty-five thousand, five hundred twenty-three".