2051113550 has 24 divisors (see below), whose sum is σ = 3980946096. Its totient is φ = 784773440.

The previous prime is 2051113549. The next prime is 2051113567. The reversal of 2051113550 is 553111502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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, 890639 + ... + 892938.

It is an arithmetic number, because the mean of its divisors is an integer number (165872754).

Almost surely, 2^2051113550 is an apocalyptic number.

2051113550 is a deficient number, since it is larger than the sum of its proper divisors (1929832546).

2051113550 is a wasteful number, since it uses less digits than its factorization.

2051113550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783612 (or 1783607 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 2051113550 is about 45289.2211237950. The cubic root of 2051113550 is about 1270.5640642319.

The spelling of 2051113550 in words is "two billion, fifty-one million, one hundred thirteen thousand, five hundred fifty".