155245015253 has 4 divisors (see below), whose sum is σ = 155245805580. Its totient is φ = 155244224928.

The previous prime is 155245015231. The next prime is 155245015283. The reversal of 155245015253 is 352510542551.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 352510542551 = 41 ⋅8597818111.

It can be written as a sum of positive squares in 2 ways, for example, as 146040915409 + 9204099844 = 382153^2 + 95938^2 .

It is a cyclic number.

It is not a de Polignac number, because 155245015253 - 2¹⁸ = 155244753109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155245015283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152363 + ... + 577671.

It is an arithmetic number, because the mean of its divisors is an integer number (38811451395).

Almost surely, 2^155245015253 is an apocalyptic number.

It is an amenable number.

155245015253 is a deficient number, since it is larger than the sum of its proper divisors (790327).

155245015253 is an equidigital number, since it uses as much as digits as its factorization.

155245015253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790326.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 155245015253 in words is "one hundred fifty-five billion, two hundred forty-five million, fifteen thousand, two hundred fifty-three".