81104354 has 4 divisors (see below), whose sum is σ = 121656534. Its totient is φ = 40552176.

The previous prime is 81104249. The next prime is 81104377. The reversal of 81104354 is 45340118.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79834225 + 1270129 = 8935^2 + 1127^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20276087 + ... + 20276090.

Almost surely, 2^81104354 is an apocalyptic number.

81104354 is a deficient number, since it is larger than the sum of its proper divisors (40552180).

81104354 is a wasteful number, since it uses less digits than its factorization.

81104354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40552179.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 81104354 is about 9005.7955784039. The cubic root of 81104354 is about 432.8605993949.

The spelling of 81104354 in words is "eighty-one million, one hundred four thousand, three hundred fifty-four".