155455471 has 4 divisors (see below), whose sum is σ = 157585072. Its totient is φ = 153325872.

The previous prime is 155455453. The next prime is 155455507. The reversal of 155455471 is 174554551.

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 155455471 - 2⁵ = 155455439 is a prime.

It is a super-3 number, since 3×155455471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155455471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155455411) 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, 1064691 + ... + 1064836.

It is an arithmetic number, because the mean of its divisors is an integer number (39396268).

Almost surely, 2^155455471 is an apocalyptic number.

155455471 is a deficient number, since it is larger than the sum of its proper divisors (2129601).

155455471 is an equidigital number, since it uses as much as digits as its factorization.

155455471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129600.

The product of its digits is 70000, while the sum is 37.

The square root of 155455471 is about 12468.1783352661. The cubic root of 155455471 is about 537.6941815796.

The spelling of 155455471 in words is "one hundred fifty-five million, four hundred fifty-five thousand, four hundred seventy-one".