155312253 has 12 divisors (see below), whose sum is σ = 224796000. Its totient is φ = 103331016.

The previous prime is 155312233. The next prime is 155312279. The reversal of 155312253 is 352213551.

It is a happy number.

It is not a de Polignac number, because 155312253 - 2⁶ = 155312189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155312203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12801 + ... + 21782.

It is an arithmetic number, because the mean of its divisors is an integer number (18733000).

Almost surely, 2^155312253 is an apocalyptic number.

It is an amenable number.

155312253 is a deficient number, since it is larger than the sum of its proper divisors (69483747).

155312253 is a wasteful number, since it uses less digits than its factorization.

155312253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35088 (or 35085 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 155312253 is about 12462.4336708365. The cubic root of 155312253 is about 537.5290085660.

The spelling of 155312253 in words is "one hundred fifty-five million, three hundred twelve thousand, two hundred fifty-three".