155494 has 4 divisors (see below), whose sum is σ = 233244. Its totient is φ = 77746.

The previous prime is 155473. The next prime is 155501. The reversal of 155494 is 494551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494551 = 19 ⋅26029.

It is a congruent number.

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, 38872 + ... + 38875.

It is an arithmetic number, because the mean of its divisors is an integer number (58311).

2¹⁵⁵⁴⁹⁴ is an apocalyptic number.

155494 is a deficient number, since it is larger than the sum of its proper divisors (77750).

155494 is an equidigital number, since it uses as much as digits as its factorization.

155494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77749.

The product of its digits is 3600, while the sum is 28.

The square root of 155494 is about 394.3272752423. The cubic root of 155494 is about 53.7738599675.

The spelling of 155494 in words is "one hundred fifty-five thousand, four hundred ninety-four".