2051320550 has 48 divisors (see below), whose sum is σ = 3987816192. Its totient is φ = 783578400.

The previous prime is 2051320529. The next prime is 2051320553. The reversal of 2051320550 is 550231502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051320553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1019045 + ... + 1021055.

It is an arithmetic number, because the mean of its divisors is an integer number (83079504).

Almost surely, 2^2051320550 is an apocalyptic number.

2051320550 is a deficient number, since it is larger than the sum of its proper divisors (1936495642).

2051320550 is a wasteful number, since it uses less digits than its factorization.

2051320550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933 (or 2928 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 2051320550 is about 45291.5063781279. The cubic root of 2051320550 is about 1270.6068049038.

The spelling of 2051320550 in words is "two billion, fifty-one million, three hundred twenty thousand, five hundred fifty".