155098 has 4 divisors (see below), whose sum is σ = 232650. Its totient is φ = 77548.

The previous prime is 155087. The next prime is 155119. The reversal of 155098 is 890551.

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., 149769 + 5329 = 387^2 + 73^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38773 + ... + 38776.

2¹⁵⁵⁰⁹⁸ is an apocalyptic number.

155098 is a deficient number, since it is larger than the sum of its proper divisors (77552).

155098 is an equidigital number, since it uses as much as digits as its factorization.

155098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77551.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 155098 is about 393.8248341585. The cubic root of 155098 is about 53.7281721356.

The spelling of 155098 in words is "one hundred fifty-five thousand, ninety-eight".