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155404 = 2238851
BaseRepresentation
bin100101111100001100
321220011201
4211330030
514433104
63155244
71215034
oct457414
9256151
10155404
11a6837
1275b24
1355972
14408c4
15310a4
hex25f0c

155404 has 6 divisors (see below), whose sum is σ = 271964. Its totient is φ = 77700.

The previous prime is 155399. The next prime is 155413. The reversal of 155404 is 404551.

Adding to 155404 its reverse (404551), we get a palindrome (559955).

155404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 155404 parts by 557 straight cuts.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19422 + ... + 19429.

2155404 is an apocalyptic number.

It is an amenable number.

155404 is a deficient number, since it is larger than the sum of its proper divisors (116560).

155404 is a wasteful number, since it uses less digits than its factorization.

155404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38855 (or 38853 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 155404 is about 394.2131403188. The cubic root of 155404 is about 53.7634831868.

The spelling of 155404 in words is "one hundred fifty-five thousand, four hundred four".

Divisors: 1 2 4 38851 77702 155404