1551116610 has 48 divisors (see below), whose sum is σ = 4039232184. Its totient is φ = 412982016.

The previous prime is 1551116599. The next prime is 1551116647. The reversal of 1551116610 is 166111551.

It can be written as a sum of positive squares in 4 ways, for example, as 1002292281 + 548824329 = 31659^2 + 23427^2 .

It is a Curzon number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 45574 + ... + 71966.

Almost surely, 2^1551116610 is an apocalyptic number.

1551116610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1551116610 is an abundant number, since it is smaller than the sum of its proper divisors (2488115574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1551116610 is a wasteful number, since it uses less digits than its factorization.

1551116610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27059 (or 27056 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The square root of 1551116610 is about 39384.2177781913. The cubic root of 1551116610 is about 1157.5723630603.

It can be divided in two parts, 155 and 1116610, that added together give a triangular number (1116765 = T₁₄₉₄).

The spelling of 1551116610 in words is "one billion, five hundred fifty-one million, one hundred sixteen thousand, six hundred ten".