155420471 has 2 divisors, whose sum is σ = 155420472. Its totient is φ = 155420470.

The previous prime is 155420467. The next prime is 155420501. The reversal of 155420471 is 174024551.

155420471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (174024551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155420471 - 2² = 155420467 is a prime.

It is a super-3 number, since 3×155420471³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155420071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77710235 + 77710236.

It is an arithmetic number, because the mean of its divisors is an integer number (77710236).

Almost surely, 2^155420471 is an apocalyptic number.

155420471 is a deficient number, since it is larger than the sum of its proper divisors (1).

155420471 is an equidigital number, since it uses as much as digits as its factorization.

155420471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 155420471 is about 12466.7746831328. The cubic root of 155420471 is about 537.6538255240.

The spelling of 155420471 in words is "one hundred fifty-five million, four hundred twenty thousand, four hundred seventy-one".