83511641 has 2 divisors, whose sum is σ = 83511642. Its totient is φ = 83511640.

The previous prime is 83511587. The next prime is 83511653. The reversal of 83511641 is 14611538.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83265625 + 246016 = 9125^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 83511641 - 2⁶ = 83511577 is a prime.

It is not a weakly prime, because it can be changed into another prime (83511041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41755820 + 41755821.

It is an arithmetic number, because the mean of its divisors is an integer number (41755821).

Almost surely, 2^83511641 is an apocalyptic number.

It is an amenable number.

83511641 is a deficient number, since it is larger than the sum of its proper divisors (1).

83511641 is an equidigital number, since it uses as much as digits as its factorization.

83511641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 83511641 is about 9138.4703862299. The cubic root of 83511641 is about 437.1015426262.

The spelling of 83511641 in words is "eighty-three million, five hundred eleven thousand, six hundred forty-one".