13771955 has 32 divisors (see below), whose sum is σ = 18714240. Its totient is φ = 9676800.

The previous prime is 13771943. The next prime is 13771973. The reversal of 13771955 is 55917731.

It is not a de Polignac number, because 13771955 - 2¹⁶ = 13706419 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91130 + ... + 91280.

It is an arithmetic number, because the mean of its divisors is an integer number (584820).

It is the magic constant of a 302 × 302 magic square.

Almost surely, 2^13771955 is an apocalyptic number.

13771955 is a deficient number, since it is larger than the sum of its proper divisors (4942285).

13771955 is a wasteful number, since it uses less digits than its factorization.

13771955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its digits is 33075, while the sum is 38.

The square root of 13771955 is about 3711.0584743439. The cubic root of 13771955 is about 239.6984348931.

The spelling of 13771955 in words is "thirteen million, seven hundred seventy-one thousand, nine hundred fifty-five".