155320002252 has 42 divisors (see below), whose sum is σ = 407528586948. Its totient is φ = 51773333112.

The previous prime is 155320002251. The next prime is 155320002269. The reversal of 155320002252 is 252200023551.

It is a super-2 number, since 2×155320002252² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (155320002251) 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 13 ways as a sum of consecutive naturals, for example, 26629458 + ... + 26635289.

It is an arithmetic number, because the mean of its divisors is an integer number (9703061594).

Almost surely, 2^155320002252 is an apocalyptic number.

155320002252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155320002252 is an abundant number, since it is smaller than the sum of its proper divisors (252208584696).

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

155320002252 is an equidigital number, since it uses as much as digits as its factorization.

155320002252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53264769 (or 53264752 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 155320002252 in words is "one hundred fifty-five billion, three hundred twenty million, two thousand, two hundred fifty-two".