550571731 has 2 divisors, whose sum is σ = 550571732. Its totient is φ = 550571730.

The previous prime is 550571617. The next prime is 550571737. The reversal of 550571731 is 137175055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 550571731 - 2²¹ = 548474579 is a prime.

It is a super-2 number, since 2×550571731² = 606258461952672722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550571737) 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, 275285865 + 275285866.

It is an arithmetic number, because the mean of its divisors is an integer number (275285866).

Almost surely, 2^550571731 is an apocalyptic number.

550571731 is a deficient number, since it is larger than the sum of its proper divisors (1).

550571731 is an equidigital number, since it uses as much as digits as its factorization.

550571731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18375, while the sum is 34.

The square root of 550571731 is about 23464.2649788993. The cubic root of 550571731 is about 819.6050700854.

The spelling of 550571731 in words is "five hundred fifty million, five hundred seventy-one thousand, seven hundred thirty-one".