155485571 has 4 divisors (see below), whose sum is σ = 159277944. Its totient is φ = 151693200.

The previous prime is 155485483. The next prime is 155485573. The reversal of 155485571 is 175584551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155485571 - 2¹⁴ = 155469187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3792331 = 155485571 / (1 + 5 + 5 + 4 + 8 + 5 + 5 + 7 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155485573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1896125 + ... + 1896206.

It is an arithmetic number, because the mean of its divisors is an integer number (39819486).

Almost surely, 2^155485571 is an apocalyptic number.

155485571 is a deficient number, since it is larger than the sum of its proper divisors (3792373).

155485571 is an equidigital number, since it uses as much as digits as its factorization.

155485571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792372.

The product of its digits is 140000, while the sum is 41.

The square root of 155485571 is about 12469.3853497275. The cubic root of 155485571 is about 537.7288829431.

The spelling of 155485571 in words is "one hundred fifty-five million, four hundred eighty-five thousand, five hundred seventy-one".