81484510 has 16 divisors (see below), whose sum is σ = 147285072. Its totient is φ = 32457600.

The previous prime is 81484463. The next prime is 81484537. The reversal of 81484510 is 1548418.

It is a super-3 number, since 3×81484510³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 14496 + ... + 19315.

It is an arithmetic number, because the mean of its divisors is an integer number (9205317).

Almost surely, 2^81484510 is an apocalyptic number.

81484510 is a deficient number, since it is larger than the sum of its proper divisors (65800562).

81484510 is a wasteful number, since it uses less digits than its factorization.

81484510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34059.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 81484510 is about 9026.8770901126. The cubic root of 81484510 is about 433.5358533972.

The spelling of 81484510 in words is "eighty-one million, four hundred eighty-four thousand, five hundred ten".