155071281 has 16 divisors (see below), whose sum is σ = 209465984. Its totient is φ = 102034944.

The previous prime is 155071271. The next prime is 155071309. The reversal of 155071281 is 182170551.

155071281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155071281 - 2¹³ = 155063089 is a prime.

It is a super-2 number, since 2×155071281² = 48094204381961922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155071271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211191 + ... + 211923.

It is an arithmetic number, because the mean of its divisors is an integer number (13091624).

Almost surely, 2^155071281 is an apocalyptic number.

It is an amenable number.

155071281 is a deficient number, since it is larger than the sum of its proper divisors (54394703).

155071281 is an equidigital number, since it uses as much as digits as its factorization.

155071281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 2800, while the sum is 30.

The square root of 155071281 is about 12452.7619827892. The cubic root of 155071281 is about 537.2508667683.

The spelling of 155071281 in words is "one hundred fifty-five million, seventy-one thousand, two hundred eighty-one".