2051173404 has 72 divisors (see below), whose sum is σ = 6116784128. Its totient is φ = 567142560.

The previous prime is 2051173391. The next prime is 2051173417. The reversal of 2051173404 is 4043711502.

2051173404 is a `hidden beast` number, since 205 + 117 + 340 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (2051173391) and next prime (2051173417).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123472 + ... + 139095.

Almost surely, 2^2051173404 is an apocalyptic number.

It is an amenable number.

2051173404 is an abundant number, since it is smaller than the sum of its proper divisors (4065610724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051173404 is a wasteful number, since it uses less digits than its factorization.

2051173404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262615 (or 262610 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2051173404 is about 45289.8819163839. The cubic root of 2051173404 is about 1270.5764229824.

Adding to 2051173404 its reverse (4043711502), we get a palindrome (6094884906).

The spelling of 2051173404 in words is "two billion, fifty-one million, one hundred seventy-three thousand, four hundred four".