155131253 has 8 divisors (see below), whose sum is σ = 156951480. Its totient is φ = 153316800.

The previous prime is 155131247. The next prime is 155131279. The reversal of 155131253 is 352131551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 122389969 + 32741284 = 11063^2 + 5722^2 .

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 155131253 - 2¹⁰ = 155130229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155131213) 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 7 ways as a sum of consecutive naturals, for example, 75443 + ... + 77471.

It is an arithmetic number, because the mean of its divisors is an integer number (19618935).

Almost surely, 2^155131253 is an apocalyptic number.

It is an amenable number.

155131253 is a deficient number, since it is larger than the sum of its proper divisors (1820227).

155131253 is a wasteful number, since it uses less digits than its factorization.

155131253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887.

The product of its digits is 2250, while the sum is 26.

The square root of 155131253 is about 12455.1697298752. The cubic root of 155131253 is about 537.3201163334.

The spelling of 155131253 in words is "one hundred fifty-five million, one hundred thirty-one thousand, two hundred fifty-three".