1551012112 has 40 divisors (see below), whose sum is σ = 3245417280. Its totient is φ = 713823360.

The previous prime is 1551012109. The next prime is 1551012131. The reversal of 1551012112 is 2112101551.

It is a self number, because there is not a number n which added to its sum of digits gives 1551012112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64287 + ... + 85057.

It is an arithmetic number, because the mean of its divisors is an integer number (81135432).

Almost surely, 2^1551012112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622708640).

1551012112 is an abundant number, since it is smaller than the sum of its proper divisors (1694405168).

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

1551012112 is a wasteful number, since it uses less digits than its factorization.

1551012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21151 (or 21145 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 1551012112 is about 39382.8911076879. The cubic root of 1551012112 is about 1157.5463674404.

Adding to 1551012112 its reverse (2112101551), we get a palindrome (3663113663).

The spelling of 1551012112 in words is "one billion, five hundred fifty-one million, twelve thousand, one hundred twelve".