155300555055001 has 4 divisors (see below), whose sum is σ = 156674896250292. Its totient is φ = 153926213859712.

The previous prime is 155300555054999. The next prime is 155300555055043. The reversal of 155300555055001 is 100550555003551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75973031495001 + 79327523560000 = 8716251^2 + 8906600^2 .

It is a cyclic number.

It is not a de Polignac number, because 155300555055001 - 2¹ = 155300555054999 is a prime.

It is a super-2 number, since 2×155300555055001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155300555058001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687170597476 + ... + 687170597701.

It is an arithmetic number, because the mean of its divisors is an integer number (39168724062573).

Almost surely, 2^{155300555055001} is an apocalyptic number.

It is an amenable number.

155300555055001 is a deficient number, since it is larger than the sum of its proper divisors (1374341195291).

155300555055001 is a wasteful number, since it uses less digits than its factorization.

155300555055001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374341195290.

The product of its (nonzero) digits is 234375, while the sum is 40.

The spelling of 155300555055001 in words is "one hundred fifty-five trillion, three hundred billion, five hundred fifty-five million, fifty-five thousand, one".