81548062 has 4 divisors (see below), whose sum is σ = 122322096. Its totient is φ = 40774030.

The previous prime is 81548059. The next prime is 81548069. The reversal of 81548062 is 26084518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26084518 = 2 ⋅13042259.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81548069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20387014 + ... + 20387017.

It is an arithmetic number, because the mean of its divisors is an integer number (30580524).

Almost surely, 2^81548062 is an apocalyptic number.

81548062 is a deficient number, since it is larger than the sum of its proper divisors (40774034).

81548062 is a wasteful number, since it uses less digits than its factorization.

81548062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40774033.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 81548062 is about 9030.3965582913. The cubic root of 81548062 is about 433.6485329350.

The spelling of 81548062 in words is "eighty-one million, five hundred forty-eight thousand, sixty-two".