81754375 has 10 divisors (see below), whose sum is σ = 102161048. Its totient is φ = 65403000.

The previous prime is 81754367. The next prime is 81754381. The reversal of 81754375 is 57345718.

It is not a de Polignac number, because 81754375 - 2³ = 81754367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 64779 + ... + 66028.

Almost surely, 2^81754375 is an apocalyptic number.

81754375 is a deficient number, since it is larger than the sum of its proper divisors (20406673).

81754375 is an equidigital number, since it uses as much as digits as its factorization.

81754375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130827 (or 130812 counting only the distinct ones).

The product of its digits is 117600, while the sum is 40.

The square root of 81754375 is about 9041.8125948285. The cubic root of 81754375 is about 434.0139288500.

The spelling of 81754375 in words is "eighty-one million, seven hundred fifty-four thousand, three hundred seventy-five".