1551155166 has 24 divisors (see below), whose sum is σ = 3666367224. Its totient is φ = 470046960.

The previous prime is 1551155093. The next prime is 1551155183. The reversal of 1551155166 is 6615511551.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1551155166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3916861 + ... + 3917256.

It is an arithmetic number, because the mean of its divisors is an integer number (152765301).

Almost surely, 2^1551155166 is an apocalyptic number.

1551155166 is an abundant number, since it is smaller than the sum of its proper divisors (2115212058).

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

1551155166 is a wasteful number, since it uses less digits than its factorization.

1551155166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834136 (or 7834133 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

The square root of 1551155166 is about 39384.7072605599. The cubic root of 1551155166 is about 1157.5819542133.

The spelling of 1551155166 in words is "one billion, five hundred fifty-one million, one hundred fifty-five thousand, one hundred sixty-six".