251116061 has 16 divisors (see below), whose sum is σ = 304292736. Its totient is φ = 202300416.

The previous prime is 251116043. The next prime is 251116091. The reversal of 251116061 is 160611152.

It is a cyclic number.

It is not a de Polignac number, because 251116061 - 2¹⁸ = 250853917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251116091) 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 15 ways as a sum of consecutive naturals, for example, 153530 + ... + 155156.

It is an arithmetic number, because the mean of its divisors is an integer number (19018296).

Almost surely, 2^251116061 is an apocalyptic number.

It is an amenable number.

251116061 is a deficient number, since it is larger than the sum of its proper divisors (53176675).

251116061 is a wasteful number, since it uses less digits than its factorization.

251116061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 251116061 is about 15846.6419471130. The cubic root of 251116061 is about 630.8965659190.

The spelling of 251116061 in words is "two hundred fifty-one million, one hundred sixteen thousand, sixty-one".