81061354 has 8 divisors (see below), whose sum is σ = 132645888. Its totient is φ = 36846060.

The previous prime is 81061313. The next prime is 81061397. The reversal of 81061354 is 45316018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81061354² = 13141886224626632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1842282 + ... + 1842325.

It is an arithmetic number, because the mean of its divisors is an integer number (16580736).

Almost surely, 2^81061354 is an apocalyptic number.

81061354 is a deficient number, since it is larger than the sum of its proper divisors (51584534).

81061354 is a wasteful number, since it uses less digits than its factorization.

81061354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684620.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 81061354 is about 9003.4079103415. The cubic root of 81061354 is about 432.7840876943.

The spelling of 81061354 in words is "eighty-one million, sixty-one thousand, three hundred fifty-four".