2550391947 has 12 divisors (see below), whose sum is σ = 3778747240. Its totient is φ = 1700086356.

The previous prime is 2550391931. The next prime is 2550391951. The reversal of 2550391947 is 7491930552.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

2550391947 is a `hidden beast` number, since 2 + 550 + 3 + 9 + 1 + 94 + 7 = 666.

It is not a de Polignac number, because 2550391947 - 2⁴ = 2550391931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2550391967) 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 11 ways as a sum of consecutive naturals, for example, 257554 + ... + 267272.

Almost surely, 2^2550391947 is an apocalyptic number.

2550391947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2550391947 is a deficient number, since it is larger than the sum of its proper divisors (1228355293).

2550391947 is an frugal number, since it uses more digits than its factorization.

2550391947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19447 (or 9722 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 2550391947 is about 50501.4053962858. The cubic root of 2550391947 is about 1366.2672014413.

The spelling of 2550391947 in words is "two billion, five hundred fifty million, three hundred ninety-one thousand, nine hundred forty-seven".