82402541 has 6 divisors (see below), whose sum is σ = 89228970. Its totient is φ = 76063728.

The previous prime is 82402493. The next prime is 82402561. The reversal of 82402541 is 14520428.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 137641 + 82264900 = 371^2 + 9070^2 .

It is not a de Polignac number, because 82402541 - 2⁶ = 82402477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82402541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82402561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243626 + ... + 243963.

It is an arithmetic number, because the mean of its divisors is an integer number (14871495).

Almost surely, 2^82402541 is an apocalyptic number.

It is an amenable number.

82402541 is a deficient number, since it is larger than the sum of its proper divisors (6826429).

82402541 is a wasteful number, since it uses less digits than its factorization.

82402541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487615 (or 487602 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 82402541 is about 9077.5845355469. The cubic root of 82402541 is about 435.1578957344.

Adding to 82402541 its reverse (14520428), we get a palindrome (96922969).

The spelling of 82402541 in words is "eighty-two million, four hundred two thousand, five hundred forty-one".