155281455 has 40 divisors (see below), whose sum is σ = 318127392. Its totient is φ = 70984512.

The previous prime is 155281453. The next prime is 155281481. The reversal of 155281455 is 554182551.

It is not a de Polignac number, because 155281455 - 2¹ = 155281453 is a prime.

It is a super-2 number, since 2×155281455² = 48224660533834050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155281453) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24552 + ... + 30221.

Almost surely, 2^155281455 is an apocalyptic number.

155281455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155281455 is an abundant number, since it is smaller than the sum of its proper divisors (162845937).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155281455 is an equidigital number, since it uses as much as digits as its factorization.

155281455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54797 (or 54788 counting only the distinct ones).

The product of its digits is 40000, while the sum is 36.

The square root of 155281455 is about 12461.1979761177. The cubic root of 155281455 is about 537.4934760340.

The spelling of 155281455 in words is "one hundred fifty-five million, two hundred eighty-one thousand, four hundred fifty-five".