551506051 has 2 divisors, whose sum is σ = 551506052. Its totient is φ = 551506050.

The previous prime is 551506049. The next prime is 551506057. The reversal of 551506051 is 150605155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551506051 - 2¹ = 551506049 is a prime.

It is a super-2 number, since 2×551506051² = 608317848579229202, which contains 22 as substring.

Together with 551506049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (551506057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275753025 + 275753026.

It is an arithmetic number, because the mean of its divisors is an integer number (275753026).

Almost surely, 2^551506051 is an apocalyptic number.

551506051 is a deficient number, since it is larger than the sum of its proper divisors (1).

551506051 is an equidigital number, since it uses as much as digits as its factorization.

551506051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 551506051 is about 23484.1659634742. The cubic root of 551506051 is about 820.0684312314.

The spelling of 551506051 in words is "five hundred fifty-one million, five hundred six thousand, fifty-one".