155068253 has 4 divisors (see below), whose sum is σ = 163229760. Its totient is φ = 146906748.

The previous prime is 155068223. The next prime is 155068259. The reversal of 155068253 is 352860551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352860551 = 17 ⋅20756503.

It is a cyclic number.

It is not a de Polignac number, because 155068253 - 2¹⁶ = 155002717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155068259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080725 + ... + 4080762.

It is an arithmetic number, because the mean of its divisors is an integer number (40807440).

Almost surely, 2^155068253 is an apocalyptic number.

It is an amenable number.

155068253 is a deficient number, since it is larger than the sum of its proper divisors (8161507).

155068253 is an equidigital number, since it uses as much as digits as its factorization.

155068253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8161506.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 155068253 is about 12452.6404027419. The cubic root of 155068253 is about 537.2473698685.

The spelling of 155068253 in words is "one hundred fifty-five million, sixty-eight thousand, two hundred fifty-three".