551545523 has 2 divisors, whose sum is σ = 551545524. Its totient is φ = 551545522.

The previous prime is 551545493. The next prime is 551545529. The reversal of 551545523 is 325545155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551545523 - 2¹² = 551541427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (551545529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275772761 + 275772762.

It is an arithmetic number, because the mean of its divisors is an integer number (275772762).

Almost surely, 2^551545523 is an apocalyptic number.

551545523 is a deficient number, since it is larger than the sum of its proper divisors (1).

551545523 is an equidigital number, since it uses as much as digits as its factorization.

551545523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75000, while the sum is 35.

The square root of 551545523 is about 23485.0063444743. The cubic root of 551545523 is about 820.0879952167.

The spelling of 551545523 in words is "five hundred fifty-one million, five hundred forty-five thousand, five hundred twenty-three".