81030254 has 8 divisors (see below), whose sum is σ = 121697688. Its totient is φ = 40464360.

The previous prime is 81030253. The next prime is 81030277. The reversal of 81030254 is 45203018.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81030253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23357 + ... + 26600.

It is an arithmetic number, because the mean of its divisors is an integer number (15212211).

Almost surely, 2^81030254 is an apocalyptic number.

81030254 is a deficient number, since it is larger than the sum of its proper divisors (40667434).

81030254 is a wasteful number, since it uses less digits than its factorization.

81030254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50770.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 81030254 is about 9001.6806208619. The cubic root of 81030254 is about 432.7287332986.

The spelling of 81030254 in words is "eighty-one million, thirty thousand, two hundred fifty-four".