1559121172 has 12 divisors (see below), whose sum is σ = 3118242400. Its totient is φ = 668194776.

The previous prime is 1559121167. The next prime is 1559121173. The reversal of 1559121172 is 2711219551.

It is a happy number.

1559121172 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1559121173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27841422 + ... + 27841477.

Almost surely, 2^1559121172 is an apocalyptic number.

It is an amenable number.

1559121172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1559121172 is a wasteful number, since it uses less digits than its factorization.

1559121172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55682910 (or 55682908 counting only the distinct ones).

The product of its digits is 6300, while the sum is 34.

The square root of 1559121172 is about 39485.7084525528. The cubic root of 1559121172 is about 1159.5601711457.

It can be divided in two parts, 15591 and 21172, that added together give a palindrome (36763).

The spelling of 1559121172 in words is "one billion, five hundred fifty-nine million, one hundred twenty-one thousand, one hundred seventy-two".