16055431 has 4 divisors (see below), whose sum is σ = 18349072. Its totient is φ = 13761792.

The previous prime is 16055393. The next prime is 16055453. The reversal of 16055431 is 13455061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13455061 = 139 ⋅96799.

It is a cyclic number.

It is not a de Polignac number, because 16055431 - 2¹⁹ = 15531143 is a prime.

It is a super-2 number, since 2×16055431² = 515553729191522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16055396 and 16055405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16055471) 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, 1146810 + ... + 1146823.

It is an arithmetic number, because the mean of its divisors is an integer number (4587268).

Almost surely, 2^16055431 is an apocalyptic number.

16055431 is a deficient number, since it is larger than the sum of its proper divisors (2293641).

16055431 is an equidigital number, since it uses as much as digits as its factorization.

16055431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293640.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 16055431 is about 4006.9228842093. The cubic root of 16055431 is about 252.2748690956.

The spelling of 16055431 in words is "sixteen million, fifty-five thousand, four hundred thirty-one".