26161506 has 48 divisors (see below), whose sum is σ = 65068224. Its totient is φ = 7441632.

The previous prime is 26161483. The next prime is 26161519. The reversal of 26161506 is 60516162.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26161506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49761 + ... + 50283.

It is an arithmetic number, because the mean of its divisors is an integer number (1355588).

Almost surely, 2^26161506 is an apocalyptic number.

26161506 is an abundant number, since it is smaller than the sum of its proper divisors (38906718).

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

26161506 is a wasteful number, since it uses less digits than its factorization.

26161506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 26161506 is about 5114.8319620492. The cubic root of 26161506 is about 296.8617524800.

Adding to 26161506 its reverse (60516162), we get a palindrome (86677668).

The spelling of 26161506 in words is "twenty-six million, one hundred sixty-one thousand, five hundred six".