155260281 has 32 divisors (see below), whose sum is σ = 236740608. Its totient is φ = 89591040.

The previous prime is 155260277. The next prime is 155260289. The reversal of 155260281 is 182062551.

It is not a de Polignac number, because 155260281 - 2² = 155260277 is a prime.

It is a super-2 number, since 2×155260281² = 48211509712397922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155260289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255480 + ... + 256086.

It is an arithmetic number, because the mean of its divisors is an integer number (7398144).

Almost surely, 2^155260281 is an apocalyptic number.

155260281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155260281 is a deficient number, since it is larger than the sum of its proper divisors (81480327).

155260281 is a wasteful number, since it uses less digits than its factorization.

155260281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 155260281 is about 12460.3483498657. The cubic root of 155260281 is about 537.4690442601.

The spelling of 155260281 in words is "one hundred fifty-five million, two hundred sixty thousand, two hundred eighty-one".