550973431 has 2 divisors, whose sum is σ = 550973432. Its totient is φ = 550973430.

The previous prime is 550973429. The next prime is 550973443. The reversal of 550973431 is 134379055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 550973431 - 2¹ = 550973429 is a prime.

It is a super-2 number, since 2×550973431² = 607143443335823522, which contains 22 as substring.

Together with 550973429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550977431) 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, 275486715 + 275486716.

It is an arithmetic number, because the mean of its divisors is an integer number (275486716).

Almost surely, 2^550973431 is an apocalyptic number.

550973431 is a deficient number, since it is larger than the sum of its proper divisors (1).

550973431 is an equidigital number, since it uses as much as digits as its factorization.

550973431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 550973431 is about 23472.8232430613. The cubic root of 550973431 is about 819.8043510025.

The spelling of 550973431 in words is "five hundred fifty million, nine hundred seventy-three thousand, four hundred thirty-one".