1051266555 has 12 divisors (see below), whose sum is σ = 1822195440. Its totient is φ = 560675472.

The previous prime is 1051266529. The next prime is 1051266577. The reversal of 1051266555 is 5556621501.

It is not a de Polignac number, because 1051266555 - 2⁷ = 1051266427 is a prime.

It is a super-2 number, since 2×1051266555² = 2210322739323136050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11680695 + ... + 11680784.

It is an arithmetic number, because the mean of its divisors is an integer number (151849620).

Almost surely, 2^1051266555 is an apocalyptic number.

1051266555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1051266555 is a deficient number, since it is larger than the sum of its proper divisors (770928885).

1051266555 is a wasteful number, since it uses less digits than its factorization.

1051266555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23361490 (or 23361487 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1051266555 is about 32423.2409700203. The cubic root of 1051266555 is about 1016.8048662201.

The spelling of 1051266555 in words is "one billion, fifty-one million, two hundred sixty-six thousand, five hundred fifty-five".