215492741 has 2 divisors, whose sum is σ = 215492742. Its totient is φ = 215492740.

The previous prime is 215492729. The next prime is 215492821. The reversal of 215492741 is 147294512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136656100 + 78836641 = 11690^2 + 8879^2 .

It is a cyclic number.

It is not a de Polignac number, because 215492741 - 2¹⁴ = 215476357 is a prime.

It is a super-3 number, since 3×215492741³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215492141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107746370 + 107746371.

It is an arithmetic number, because the mean of its divisors is an integer number (107746371).

Almost surely, 2^215492741 is an apocalyptic number.

It is an amenable number.

215492741 is a deficient number, since it is larger than the sum of its proper divisors (1).

215492741 is an equidigital number, since it uses as much as digits as its factorization.

215492741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 215492741 is about 14679.6710112999. The cubic root of 215492741 is about 599.5299475881.

The spelling of 215492741 in words is "two hundred fifteen million, four hundred ninety-two thousand, seven hundred forty-one".