155408 has 20 divisors (see below), whose sum is σ = 328848. Its totient is φ = 70560.

The previous prime is 155399. The next prime is 155413. The reversal of 155408 is 804551.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

155408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266 + ... + 617.

2¹⁵⁵⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

155408 is an abundant number, since it is smaller than the sum of its proper divisors (173440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155408 is a wasteful number, since it uses less digits than its factorization.

155408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 155408 is about 394.2182136837. The cubic root of 155408 is about 53.7639444621.

Adding to 155408 its reverse (804551), we get a palindrome (959959).

The spelling of 155408 in words is "one hundred fifty-five thousand, four hundred eight".