2051440172 has 6 divisors (see below), whose sum is σ = 3590020308. Its totient is φ = 1025720084.

The previous prime is 2051440169. The next prime is 2051440199. The reversal of 2051440172 is 2710441502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256430018 + ... + 256430025.

It is an arithmetic number, because the mean of its divisors is an integer number (598336718).

Almost surely, 2^2051440172 is an apocalyptic number.

It is an amenable number.

2051440172 is a deficient number, since it is larger than the sum of its proper divisors (1538580136).

2051440172 is a wasteful number, since it uses less digits than its factorization.

2051440172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512860047 (or 512860045 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2051440172 is about 45292.8269376068. The cubic root of 2051440172 is about 1270.6315027459.

Adding to 2051440172 its reverse (2710441502), we get a palindrome (4761881674).

The spelling of 2051440172 in words is "two billion, fifty-one million, four hundred forty thousand, one hundred seventy-two".