551056001 has 2 divisors, whose sum is σ = 551056002. Its totient is φ = 551056000.

The previous prime is 551055991. The next prime is 551056019. The reversal of 551056001 is 100650155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432681601 + 118374400 = 20801^2 + 10880^2 .

It is a cyclic number.

It is not a de Polignac number, because 551056001 - 2⁶ = 551055937 is a prime.

It is a super-2 number, since 2×551056001² = 607325432476224002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (551056091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275528000 + 275528001.

It is an arithmetic number, because the mean of its divisors is an integer number (275528001).

Almost surely, 2^551056001 is an apocalyptic number.

It is an amenable number.

551056001 is a deficient number, since it is larger than the sum of its proper divisors (1).

551056001 is an equidigital number, since it uses as much as digits as its factorization.

551056001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 551056001 is about 23474.5820197080. The cubic root of 551056001 is about 819.8453014733.

The spelling of 551056001 in words is "five hundred fifty-one million, fifty-six thousand, one".