13957771 has 4 divisors (see below), whose sum is σ = 14046832. Its totient is φ = 13868712.

The previous prime is 13957763. The next prime is 13957789. The reversal of 13957771 is 17775931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17775931 = 17 ⋅1045643.

It is a cyclic number.

It is not a de Polignac number, because 13957771 - 2³ = 13957763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13957721) 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, 44295 + ... + 44608.

It is an arithmetic number, because the mean of its divisors is an integer number (3511708).

Almost surely, 2^13957771 is an apocalyptic number.

13957771 is a deficient number, since it is larger than the sum of its proper divisors (89061).

13957771 is an equidigital number, since it uses as much as digits as its factorization.

13957771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89060.

The product of its digits is 46305, while the sum is 40.

The square root of 13957771 is about 3736.0100374597. The cubic root of 13957771 is about 240.7716540310.

The spelling of 13957771 in words is "thirteen million, nine hundred fifty-seven thousand, seven hundred seventy-one".