2152124881 has 9 divisors (see below), whose sum is σ = 2250879771. Its totient is φ = 2057533632.

The previous prime is 2152124879. The next prime is 2152124941. The reversal of 2152124881 is 1884212512.

The square root of 2152124881 is 46391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1820302225 + 331822656 = 42665^2 + 18216^2 .

It is not a de Polignac number, because 2152124881 - 2¹ = 2152124879 is a prime.

It is a super-2 number, since 2×2152124881² = 9263283006838528322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152124801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1065985 + ... + 1068001.

Almost surely, 2^2152124881 is an apocalyptic number.

2152124881 is the 46391-st square number.

2152124881 is the 23196-th centered octagonal number.

It is an amenable number.

2152124881 is a deficient number, since it is larger than the sum of its proper divisors (98754890).

2152124881 is an frugal number, since it uses more digits than its factorization.

2152124881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080 (or 2040 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The cubic root of 2152124881 is about 1291.0879352539.

The spelling of 2152124881 in words is "two billion, one hundred fifty-two million, one hundred twenty-four thousand, eight hundred eighty-one".