155040615522053 has 4 divisors (see below), whose sum is σ = 155042313813900. Its totient is φ = 155038917230208.

The previous prime is 155040615521977. The next prime is 155040615522071. The reversal of 155040615522053 is 350225516040551.

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 89753682240964 + 65286933281089 = 9473842^2 + 8080033^2 .

It is a cyclic number.

It is not a de Polignac number, because 155040615522053 - 2⁸ = 155040615521797 is a prime.

It is a super-2 number, since 2×155040615522053² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155040615521995 and 155040615522013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155040615522953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849008978 + ... + 849191571.

It is an arithmetic number, because the mean of its divisors is an integer number (38760578453475).

Almost surely, 2^{155040615522053} is an apocalyptic number.

It is an amenable number.

155040615522053 is a deficient number, since it is larger than the sum of its proper divisors (1698291847).

155040615522053 is an equidigital number, since it uses as much as digits as its factorization.

155040615522053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698291846.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 155040615522053 in words is "one hundred fifty-five trillion, forty billion, six hundred fifteen million, five hundred twenty-two thousand, fifty-three".