551423573 has 2 divisors, whose sum is σ = 551423574. Its totient is φ = 551423572.

The previous prime is 551423549. The next prime is 551423651. The reversal of 551423573 is 375324155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 416445649 + 134977924 = 20407^2 + 11618^2 .

It is a cyclic number.

It is not a de Polignac number, because 551423573 - 2²⁰ = 550374997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551423503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275711786 + 275711787.

It is an arithmetic number, because the mean of its divisors is an integer number (275711787).

Almost surely, 2^551423573 is an apocalyptic number.

It is an amenable number.

551423573 is a deficient number, since it is larger than the sum of its proper divisors (1).

551423573 is an equidigital number, since it uses as much as digits as its factorization.

551423573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 35.

The square root of 551423573 is about 23482.4098635553. The cubic root of 551423573 is about 820.0275486481.

The spelling of 551423573 in words is "five hundred fifty-one million, four hundred twenty-three thousand, five hundred seventy-three".