215899141 has 2 divisors, whose sum is σ = 215899142. Its totient is φ = 215899140.

The previous prime is 215899129. The next prime is 215899193. The reversal of 215899141 is 141998512.

215899141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215796100 + 103041 = 14690^2 + 321^2 .

It is a cyclic number.

It is not a de Polignac number, because 215899141 - 2⁹ = 215898629 is a prime.

It is a super-2 number, since 2×215899141² = 93224878169075762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215899094 and 215899103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215891141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107949570 + 107949571.

It is an arithmetic number, because the mean of its divisors is an integer number (107949571).

Almost surely, 2^215899141 is an apocalyptic number.

It is an amenable number.

215899141 is a deficient number, since it is larger than the sum of its proper divisors (1).

215899141 is an equidigital number, since it uses as much as digits as its factorization.

215899141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 40.

The square root of 215899141 is about 14693.5067631931. The cubic root of 215899141 is about 599.9065974977.

The spelling of 215899141 in words is "two hundred fifteen million, eight hundred ninety-nine thousand, one hundred forty-one".