1051555155 has 64 divisors (see below), whose sum is σ = 1957401600. Its totient is φ = 472158720.

The previous prime is 1051555129. The next prime is 1051555177. The reversal of 1051555155 is 5515551501.

It is not a de Polignac number, because 1051555155 - 2¹⁶ = 1051489619 is a prime.

It is a super-2 number, since 2×1051555155² = 2211536488014148050, 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 63 ways as a sum of consecutive naturals, for example, 1590525 + ... + 1591185.

It is an arithmetic number, because the mean of its divisors is an integer number (30584400).

Almost surely, 2^1051555155 is an apocalyptic number.

1051555155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1051555155 is a deficient number, since it is larger than the sum of its proper divisors (905846445).

1051555155 is a wasteful number, since it uses less digits than its factorization.

1051555155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its (nonzero) digits is 15625, while the sum is 33.

The square root of 1051555155 is about 32427.6911759071. The cubic root of 1051555155 is about 1016.8979041637.

The spelling of 1051555155 in words is "one billion, fifty-one million, five hundred fifty-five thousand, one hundred fifty-five".