155133801 has 12 divisors (see below), whose sum is σ = 226919680. Its totient is φ = 102112920.

The previous prime is 155133787. The next prime is 155133817. The reversal of 155133801 is 108331551.

155133801 is a `hidden beast` number, since 1 + 551 + 33 + 80 + 1 = 666.

It is not a de Polignac number, because 155133801 - 2¹⁸ = 154871657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155133821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108385 + ... + 109806.

Almost surely, 2^155133801 is an apocalyptic number.

It is an amenable number.

155133801 is a deficient number, since it is larger than the sum of its proper divisors (71785879).

155133801 is a wasteful number, since it uses less digits than its factorization.

155133801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218276 (or 218273 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 155133801 is about 12455.2720162990. The cubic root of 155133801 is about 537.3230581093.

It can be divided in two parts, 155 and 133801, that added together give a square (133956 = 366²).

The spelling of 155133801 in words is "one hundred fifty-five million, one hundred thirty-three thousand, eight hundred one".