501047977 has 2 divisors, whose sum is σ = 501047978. Its totient is φ = 501047976.

The previous prime is 501047927. The next prime is 501047999. The reversal of 501047977 is 779740105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475937856 + 25110121 = 21816^2 + 5011^2 .

It is a cyclic number.

It is not a de Polignac number, because 501047977 - 2¹⁵ = 501015209 is a prime.

It is not a weakly prime, because it can be changed into another prime (501047927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250523988 + 250523989.

It is an arithmetic number, because the mean of its divisors is an integer number (250523989).

Almost surely, 2^501047977 is an apocalyptic number.

It is an amenable number.

501047977 is a deficient number, since it is larger than the sum of its proper divisors (1).

501047977 is an equidigital number, since it uses as much as digits as its factorization.

501047977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 501047977 is about 22384.1009870846. The cubic root of 501047977 is about 794.2546589492.

It can be divided in two parts, 50104 and 7977, that added together give a square (58081 = 241²).

The spelling of 501047977 in words is "five hundred one million, forty-seven thousand, nine hundred seventy-seven".