82453997 has 2 divisors, whose sum is σ = 82453998. Its totient is φ = 82453996.

The previous prime is 82453957. The next prime is 82454033. The reversal of 82453997 is 79935428.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76983076 + 5470921 = 8774^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 82453997 - 2²⁰ = 81405421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82453907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41226998 + 41226999.

It is an arithmetic number, because the mean of its divisors is an integer number (41226999).

Almost surely, 2^82453997 is an apocalyptic number.

It is an amenable number.

82453997 is a deficient number, since it is larger than the sum of its proper divisors (1).

82453997 is an equidigital number, since it uses as much as digits as its factorization.

82453997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 82453997 is about 9080.4183273680. The cubic root of 82453997 is about 435.2484545338.

Subtracting from 82453997 its reverse (79935428), we obtain a square (2518569 = 1587²).

The spelling of 82453997 in words is "eighty-two million, four hundred fifty-three thousand, nine hundred ninety-seven".