551253503 has 2 divisors, whose sum is σ = 551253504. Its totient is φ = 551253502.

The previous prime is 551253499. The next prime is 551253511. The reversal of 551253503 is 305352155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551253503 - 2² = 551253499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551253103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275626751 + 275626752.

It is an arithmetic number, because the mean of its divisors is an integer number (275626752).

Almost surely, 2^551253503 is an apocalyptic number.

551253503 is a deficient number, since it is larger than the sum of its proper divisors (1).

551253503 is an equidigital number, since it uses as much as digits as its factorization.

551253503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 551253503 is about 23478.7883631162. The cubic root of 551253503 is about 819.9432357097.

The spelling of 551253503 in words is "five hundred fifty-one million, two hundred fifty-three thousand, five hundred three".