1527872161 has 4 divisors (see below), whose sum is σ = 1617747012. Its totient is φ = 1437997312.

The previous prime is 1527872149. The next prime is 1527872179. The reversal of 1527872161 is 1612787251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1612787251 = 7681 ⋅209971.

It can be written as a sum of positive squares in 2 ways, for example, as 1165198225 + 362673936 = 34135^2 + 19044^2 .

It is a cyclic number.

It is not a de Polignac number, because 1527872161 - 2¹³ = 1527863969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1527872131) 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, 44937400 + ... + 44937433.

It is an arithmetic number, because the mean of its divisors is an integer number (404436753).

Almost surely, 2^1527872161 is an apocalyptic number.

It is an amenable number.

1527872161 is a deficient number, since it is larger than the sum of its proper divisors (89874851).

1527872161 is an equidigital number, since it uses as much as digits as its factorization.

1527872161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89874850.

The product of its digits is 47040, while the sum is 40.

The square root of 1527872161 is about 39088.0053341175. The cubic root of 1527872161 is about 1151.7609218957.

The spelling of 1527872161 in words is "one billion, five hundred twenty-seven million, eight hundred seventy-two thousand, one hundred sixty-one".