16056551 has 12 divisors (see below), whose sum is σ = 19495728. Its totient is φ = 12951552.

The previous prime is 16056541. The next prime is 16056581. The reversal of 16056551 is 15565061.

16056551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16056551 - 2⁶ = 16056487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16056511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1946 + ... + 5991.

It is an arithmetic number, because the mean of its divisors is an integer number (1624644).

Almost surely, 2^16056551 is an apocalyptic number.

16056551 is a deficient number, since it is larger than the sum of its proper divisors (3439177).

16056551 is an equidigital number, since it uses as much as digits as its factorization.

16056551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978 (or 7961 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 16056551 is about 4007.0626398897. The cubic root of 16056551 is about 252.2807350502.

The spelling of 16056551 in words is "sixteen million, fifty-six thousand, five hundred fifty-one".