82154507 has 2 divisors, whose sum is σ = 82154508. Its totient is φ = 82154506.

The previous prime is 82154497. The next prime is 82154509. The reversal of 82154507 is 70545128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82154507 - 2²⁰ = 81105931 is a prime.

Together with 82154509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82154509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41077253 + 41077254.

It is an arithmetic number, because the mean of its divisors is an integer number (41077254).

Almost surely, 2^82154507 is an apocalyptic number.

82154507 is a deficient number, since it is larger than the sum of its proper divisors (1).

82154507 is an equidigital number, since it uses as much as digits as its factorization.

82154507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 82154507 is about 9063.9123451190. The cubic root of 82154507 is about 434.7208443667.

The spelling of 82154507 in words is "eighty-two million, one hundred fifty-four thousand, five hundred seven".