361506121 has 2 divisors, whose sum is σ = 361506122. Its totient is φ = 361506120.

The previous prime is 361506113. The next prime is 361506137. The reversal of 361506121 is 121605163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284259600 + 77246521 = 16860^2 + 8789^2 .

It is a cyclic number.

It is not a de Polignac number, because 361506121 - 2³ = 361506113 is a prime.

It is not a weakly prime, because it can be changed into another prime (361506161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180753060 + 180753061.

It is an arithmetic number, because the mean of its divisors is an integer number (180753061).

Almost surely, 2^361506121 is an apocalyptic number.

It is an amenable number.

361506121 is a deficient number, since it is larger than the sum of its proper divisors (1).

361506121 is an equidigital number, since it uses as much as digits as its factorization.

361506121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 361506121 is about 19013.3143086628. The cubic root of 361506121 is about 712.3693383465.

The spelling of 361506121 in words is "three hundred sixty-one million, five hundred six thousand, one hundred twenty-one".