1606550051 has 4 divisors (see below), whose sum is σ = 1613627592. Its totient is φ = 1599472512.

The previous prime is 1606550017. The next prime is 1606550081. The reversal of 1606550051 is 1500556061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1500556061 = 251 ⋅5978311.

It is a cyclic number.

It is not a de Polignac number, because 1606550051 - 2¹⁴ = 1606533667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1606549996 and 1606550023.

It is not an unprimeable number, because it can be changed into a prime (1606550081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3538430 + ... + 3538883.

It is an arithmetic number, because the mean of its divisors is an integer number (403406898).

Almost surely, 2^1606550051 is an apocalyptic number.

1606550051 is a deficient number, since it is larger than the sum of its proper divisors (7077541).

1606550051 is an equidigital number, since it uses as much as digits as its factorization.

1606550051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7077540.

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

The square root of 1606550051 is about 40081.7920133319. The cubic root of 1606550051 is about 1171.2009610560.

The spelling of 1606550051 in words is "one billion, six hundred six million, five hundred fifty thousand, fifty-one".