13261550 has 12 divisors (see below), whose sum is σ = 24666576. Its totient is φ = 5304600.

The previous prime is 13261543. The next prime is 13261553. The reversal of 13261550 is 5516231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132566 + ... + 132665.

It is an arithmetic number, because the mean of its divisors is an integer number (2055548).

Almost surely, 2^13261550 is an apocalyptic number.

13261550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13261550 is a deficient number, since it is larger than the sum of its proper divisors (11405026).

13261550 is a wasteful number, since it uses less digits than its factorization.

13261550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265243 (or 265238 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 13261550 is about 3641.6411135640. The cubic root of 13261550 is about 236.6999115722.

Adding to 13261550 its reverse (5516231), we get a palindrome (18777781).

The spelling of 13261550 in words is "thirteen million, two hundred sixty-one thousand, five hundred fifty".