16505098 has 4 divisors (see below), whose sum is σ = 24757650. Its totient is φ = 8252548.

The previous prime is 16505087. The next prime is 16505123. The reversal of 16505098 is 89050561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89050561 = 29 ⋅3070709.

It can be written as a sum of positive squares in only one way, i.e., 16216729 + 288369 = 4027^2 + 537^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126273 + ... + 4126276.

Almost surely, 2^16505098 is an apocalyptic number.

16505098 is a deficient number, since it is larger than the sum of its proper divisors (8252552).

16505098 is an equidigital number, since it uses as much as digits as its factorization.

16505098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252551.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 16505098 is about 4062.6466742753. The cubic root of 16505098 is about 254.6083851749.

The spelling of 16505098 in words is "sixteen million, five hundred five thousand, ninety-eight".