155531652 has 12 divisors (see below), whose sum is σ = 362907216. Its totient is φ = 51843880.

The previous prime is 155531647. The next prime is 155531653. The reversal of 155531652 is 256135551.

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

It is not an unprimeable number, because it can be changed into a prime (155531653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6480474 + ... + 6480497.

It is an arithmetic number, because the mean of its divisors is an integer number (30242268).

Almost surely, 2^155531652 is an apocalyptic number.

155531652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155531652 is an abundant number, since it is smaller than the sum of its proper divisors (207375564).

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

155531652 is a wasteful number, since it uses less digits than its factorization.

155531652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12960978 (or 12960976 counting only the distinct ones).

The product of its digits is 22500, while the sum is 33.

The square root of 155531652 is about 12471.2329783386. The cubic root of 155531652 is about 537.7819996342.

It can be divided in two parts, 15553 and 1652, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 155531652 in words is "one hundred fifty-five million, five hundred thirty-one thousand, six hundred fifty-two".