155120252 has 24 divisors (see below), whose sum is σ = 310643424. Its totient is φ = 66393792.

The previous prime is 155120227. The next prime is 155120267. The reversal of 155120252 is 252021551.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21398 + ... + 27714.

It is an arithmetic number, because the mean of its divisors is an integer number (12943476).

Almost surely, 2^155120252 is an apocalyptic number.

It is an amenable number.

155120252 is an abundant number, since it is smaller than the sum of its proper divisors (155523172).

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

155120252 is a wasteful number, since it uses less digits than its factorization.

155120252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7205 (or 7203 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 155120252 is about 12454.7280981963. The cubic root of 155120252 is about 537.3074148345.

The spelling of 155120252 in words is "one hundred fifty-five million, one hundred twenty thousand, two hundred fifty-two".