27161526 has 64 divisors (see below), whose sum is σ = 66193920. Its totient is φ = 7257600.

The previous prime is 27161521. The next prime is 27161527. The reversal of 27161526 is 62516172.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27161493 and 27161502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27161521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80430 + ... + 80766.

It is an arithmetic number, because the mean of its divisors is an integer number (1034280).

Almost surely, 2^27161526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27161526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33096960).

27161526 is an abundant number, since it is smaller than the sum of its proper divisors (39032394).

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

27161526 is a wasteful number, since it uses less digits than its factorization.

27161526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469.

The product of its digits is 5040, while the sum is 30.

The square root of 27161526 is about 5211.6720925246. The cubic root of 27161526 is about 300.5970554056.

Adding to 27161526 its reverse (62516172), we get a palindrome (89677698).

The spelling of 27161526 in words is "twenty-seven million, one hundred sixty-one thousand, five hundred twenty-six".