551266501 has 2 divisors, whose sum is σ = 551266502. Its totient is φ = 551266500.

The previous prime is 551266483. The next prime is 551266523. The reversal of 551266501 is 105662155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519794401 + 31472100 = 22799^2 + 5610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551266501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551266561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275633250 + 275633251.

It is an arithmetic number, because the mean of its divisors is an integer number (275633251).

Almost surely, 2^551266501 is an apocalyptic number.

It is an amenable number.

551266501 is a deficient number, since it is larger than the sum of its proper divisors (1).

551266501 is an equidigital number, since it uses as much as digits as its factorization.

551266501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 551266501 is about 23479.0651645248. The cubic root of 551266501 is about 819.9496801364.

The spelling of 551266501 in words is "five hundred fifty-one million, two hundred sixty-six thousand, five hundred one".