13977555 has 8 divisors (see below), whose sum is σ = 22364112. Its totient is φ = 7454688.

The previous prime is 13977533. The next prime is 13977563. The reversal of 13977555 is 55577931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13977555 - 2⁷ = 13977427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465904 + ... + 465933.

It is an arithmetic number, because the mean of its divisors is an integer number (2795514).

Almost surely, 2^13977555 is an apocalyptic number.

13977555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13977555 is a deficient number, since it is larger than the sum of its proper divisors (8386557).

13977555 is an equidigital number, since it uses as much as digits as its factorization.

13977555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931845.

The product of its digits is 165375, while the sum is 42.

The square root of 13977555 is about 3738.6568443761. The cubic root of 13977555 is about 240.8853583750.

The spelling of 13977555 in words is "thirteen million, nine hundred seventy-seven thousand, five hundred fifty-five".