1551561150 has 24 divisors (see below), whose sum is σ = 3847872024. Its totient is φ = 413749600.

The previous prime is 1551561113. The next prime is 1551561197. The reversal of 1551561150 is 511651551.

1551561150 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 5171721 + ... + 5172020.

It is an arithmetic number, because the mean of its divisors is an integer number (160328001).

Almost surely, 2^1551561150 is an apocalyptic number.

1551561150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1551561150 is an abundant number, since it is smaller than the sum of its proper divisors (2296310874).

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

1551561150 is a wasteful number, since it uses less digits than its factorization.

1551561150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10343756 (or 10343751 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The square root of 1551561150 is about 39389.8610050861. The cubic root of 1551561150 is about 1157.6829367514.

The spelling of 1551561150 in words is "one billion, five hundred fifty-one million, five hundred sixty-one thousand, one hundred fifty".