155229252 has 12 divisors (see below), whose sum is σ = 362201616. Its totient is φ = 51743080.

The previous prime is 155229251. The next prime is 155229271. The reversal of 155229252 is 252922551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×155229252² = 48192241352959008, which contains 22 as substring.

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, 6467874 + ... + 6467897.

It is an arithmetic number, because the mean of its divisors is an integer number (30183468).

Almost surely, 2^155229252 is an apocalyptic number.

155229252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155229252 is an abundant number, since it is smaller than the sum of its proper divisors (206972364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155229252 is a wasteful number, since it uses less digits than its factorization.

155229252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935778 (or 12935776 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 155229252 is about 12459.1031779980. The cubic root of 155229252 is about 537.4332372098.

The spelling of 155229252 in words is "one hundred fifty-five million, two hundred twenty-nine thousand, two hundred fifty-two".