83651531 has 2 divisors, whose sum is σ = 83651532. Its totient is φ = 83651530.

The previous prime is 83651501. The next prime is 83651549. The reversal of 83651531 is 13515638.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83651531 - 2¹⁰ = 83650507 is a prime.

It is a super-2 number, since 2×83651531² = 13995157277287922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83651501) 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, 41825765 + 41825766.

It is an arithmetic number, because the mean of its divisors is an integer number (41825766).

Almost surely, 2^83651531 is an apocalyptic number.

83651531 is a deficient number, since it is larger than the sum of its proper divisors (1).

83651531 is an equidigital number, since it uses as much as digits as its factorization.

83651531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 83651531 is about 9146.1210903858. The cubic root of 83651531 is about 437.3454687980.

The spelling of 83651531 in words is "eighty-three million, six hundred fifty-one thousand, five hundred thirty-one".