531977 has 2 divisors, whose sum is σ = 531978. Its totient is φ = 531976.

The previous prime is 531919. The next prime is 531983. The reversal of 531977 is 779135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512656 + 19321 = 716^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 531977 - 2¹² = 527881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265988 + 265989.

It is an arithmetic number, because the mean of its divisors is an integer number (265989).

2⁵³¹⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

531977 is a deficient number, since it is larger than the sum of its proper divisors (1).

531977 is an equidigital number, since it uses as much as digits as its factorization.

531977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6615, while the sum is 32.

The square root of 531977 is about 729.3675342377. The cubic root of 531977 is about 81.0272224712.

The spelling of 531977 in words is "five hundred thirty-one thousand, nine hundred seventy-seven".