155289455 has 4 divisors (see below), whose sum is σ = 186347352. Its totient is φ = 124231560.

The previous prime is 155289443. The next prime is 155289479. The reversal of 155289455 is 554982551.

155289455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155289455 - 2¹⁴ = 155273071 is a prime.

It is a super-2 number, since 2×155289455² = 48229629668394050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15528941 + ... + 15528950.

It is an arithmetic number, because the mean of its divisors is an integer number (46586838).

Almost surely, 2^155289455 is an apocalyptic number.

155289455 is a deficient number, since it is larger than the sum of its proper divisors (31057897).

155289455 is an equidigital number, since it uses as much as digits as its factorization.

155289455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31057896.

The product of its digits is 360000, while the sum is 44.

The square root of 155289455 is about 12461.5189684083. The cubic root of 155289455 is about 537.5027063141.

The spelling of 155289455 in words is "one hundred fifty-five million, two hundred eighty-nine thousand, four hundred fifty-five".