1215054941 has 2 divisors, whose sum is σ = 1215054942. Its totient is φ = 1215054940.

The previous prime is 1215054901. The next prime is 1215054949. The reversal of 1215054941 is 1494505121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973128025 + 241926916 = 31195^2 + 15554^2 .

It is a cyclic number.

It is not a de Polignac number, because 1215054941 - 2¹⁴ = 1215038557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1215054898 and 1215054907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215054949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607527470 + 607527471.

It is an arithmetic number, because the mean of its divisors is an integer number (607527471).

Almost surely, 2^1215054941 is an apocalyptic number.

It is an amenable number.

1215054941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215054941 is an equidigital number, since it uses as much as digits as its factorization.

1215054941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1215054941 is about 34857.6382016912. The cubic root of 1215054941 is about 1067.0840749955.

The spelling of 1215054941 in words is "one billion, two hundred fifteen million, fifty-four thousand, nine hundred forty-one".