251060049 has 12 divisors (see below), whose sum is σ = 362878516. Its totient is φ = 167264352.

The previous prime is 251060023. The next prime is 251060057. The reversal of 251060049 is 940060152.

251060049 is a `hidden beast` number, since 2 + 5 + 10 + 600 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89643024 + 161417025 = 9468^2 + 12705^2 .

It is not a de Polignac number, because 251060049 - 2²⁰ = 250011473 is a prime.

It is a super-2 number, since 2×251060049² = 126062296407764802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251060449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6999 + ... + 23475.

Almost surely, 2^251060049 is an apocalyptic number.

It is an amenable number.

251060049 is a deficient number, since it is larger than the sum of its proper divisors (111818467).

251060049 is a wasteful number, since it uses less digits than its factorization.

251060049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18176 (or 18173 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 251060049 is about 15844.8745340567. The cubic root of 251060049 is about 630.8496548001.

The spelling of 251060049 in words is "two hundred fifty-one million, sixty thousand, forty-nine".