920215061 has 2 divisors, whose sum is σ = 920215062. Its totient is φ = 920215060.

The previous prime is 920215057. The next prime is 920215103. The reversal of 920215061 is 160512029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916938961 + 3276100 = 30281^2 + 1810^2 .

It is an emirp because it is prime and its reverse (160512029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920215061 - 2² = 920215057 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 920215061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920212061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460107530 + 460107531.

It is an arithmetic number, because the mean of its divisors is an integer number (460107531).

Almost surely, 2^920215061 is an apocalyptic number.

It is an amenable number.

920215061 is a deficient number, since it is larger than the sum of its proper divisors (1).

920215061 is an equidigital number, since it uses as much as digits as its factorization.

920215061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 920215061 is about 30335.0467446483. The cubic root of 920215061 is about 972.6646050701.

The spelling of 920215061 in words is "nine hundred twenty million, two hundred fifteen thousand, sixty-one".