155105471 has 2 divisors, whose sum is σ = 155105472. Its totient is φ = 155105470.

The previous prime is 155105453. The next prime is 155105473. The reversal of 155105471 is 174501551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155105471 is a prime.

It is a super-3 number, since 3×155105471³ (a number of 26 digits) contains 333 as substring.

Together with 155105473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155105473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77552735 + 77552736.

It is an arithmetic number, because the mean of its divisors is an integer number (77552736).

Almost surely, 2^155105471 is an apocalyptic number.

155105471 is a deficient number, since it is larger than the sum of its proper divisors (1).

155105471 is an equidigital number, since it uses as much as digits as its factorization.

155105471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 155105471 is about 12454.1346949517. The cubic root of 155105471 is about 537.2903480899.

The spelling of 155105471 in words is "one hundred fifty-five million, one hundred five thousand, four hundred seventy-one".