155229253 has 4 divisors (see below), whose sum is σ = 155907340. Its totient is φ = 154551168.

The previous prime is 155229251. The next prime is 155229271. The reversal of 155229253 is 352922551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352922551 = 1901 ⋅185651.

It can be written as a sum of positive squares in 2 ways, for example, as 106131204 + 49098049 = 10302^2 + 7007^2 .

It is a cyclic number.

It is not a de Polignac number, because 155229253 - 2¹ = 155229251 is a prime.

It is a super-2 number, since 2×155229253² = 48192241973876018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155229251) 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, 338700 + ... + 339157.

It is an arithmetic number, because the mean of its divisors is an integer number (38976835).

Almost surely, 2^155229253 is an apocalyptic number.

It is an amenable number.

155229253 is a deficient number, since it is larger than the sum of its proper divisors (678087).

155229253 is an equidigital number, since it uses as much as digits as its factorization.

155229253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678086.

The product of its digits is 27000, while the sum is 34.

The square root of 155229253 is about 12459.1032181293. The cubic root of 155229253 is about 537.4332383639.

The spelling of 155229253 in words is "one hundred fifty-five million, two hundred twenty-nine thousand, two hundred fifty-three".