155231525132551 has 8 divisors (see below), whose sum is σ = 177544240232480. Its totient is φ = 132953005767168.

The previous prime is 155231525132521. The next prime is 155231525132687.

155231525132551 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155231525132551 - 2¹¹ = 155231525130503 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 (155231525132521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8548923906 + ... + 8548942063.

It is an arithmetic number, because the mean of its divisors is an integer number (22193030029060).

Almost surely, 2^{155231525132551} is an apocalyptic number.

155231525132551 is a deficient number, since it is larger than the sum of its proper divisors (22312715099929).

155231525132551 is a wasteful number, since it uses less digits than its factorization.

155231525132551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17097867273.

The product of its digits is 1125000, while the sum is 46.

The spelling of 155231525132551 in words is "one hundred fifty-five trillion, two hundred thirty-one billion, five hundred twenty-five million, one hundred thirty-two thousand, five hundred fifty-one".