116145261 has 12 divisors (see below), whose sum is σ = 173550780. Its totient is φ = 74760000.

The previous prime is 116145259. The next prime is 116145283. The reversal of 116145261 is 162541611.

It can be written as a sum of positive squares in 2 ways, for example, as 26842761 + 89302500 = 5181^2 + 9450^2 .

It is not a de Polignac number, because 116145261 - 2¹ = 116145259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116145061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222240 + ... + 222761.

It is an arithmetic number, because the mean of its divisors is an integer number (14462565).

Almost surely, 2^116145261 is an apocalyptic number.

It is an amenable number.

116145261 is a deficient number, since it is larger than the sum of its proper divisors (57405519).

116145261 is a wasteful number, since it uses less digits than its factorization.

116145261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445036 (or 445033 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 116145261 is about 10777.0710770599. The cubic root of 116145261 is about 487.9033852562.

Adding to 116145261 its reverse (162541611), we get a palindrome (278686872).

The spelling of 116145261 in words is "one hundred sixteen million, one hundred forty-five thousand, two hundred sixty-one".