100156361 has 2 divisors, whose sum is σ = 100156362. Its totient is φ = 100156360.

The previous prime is 100156339. The next prime is 100156393. The reversal of 100156361 is 163651001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91489225 + 8667136 = 9565^2 + 2944^2 .

It is a cyclic number.

It is not a de Polignac number, because 100156361 - 2¹⁸ = 99894217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100156261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50078180 + 50078181.

It is an arithmetic number, because the mean of its divisors is an integer number (50078181).

Almost surely, 2^100156361 is an apocalyptic number.

It is an amenable number.

100156361 is a deficient number, since it is larger than the sum of its proper divisors (1).

100156361 is an equidigital number, since it uses as much as digits as its factorization.

100156361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 100156361 is about 10007.8149962916. The cubic root of 100156361 is about 464.4006785378.

The spelling of 100156361 in words is "one hundred million, one hundred fifty-six thousand, three hundred sixty-one".