155564072 has 16 divisors (see below), whose sum is σ = 293911200. Its totient is φ = 77187760.

The previous prime is 155564069. The next prime is 155564083. The reversal of 155564072 is 270465551.

It is an unprimeable number.

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, 73172 + ... + 75267.

It is an arithmetic number, because the mean of its divisors is an integer number (18369450).

Almost surely, 2^155564072 is an apocalyptic number.

It is an amenable number.

155564072 is a deficient number, since it is larger than the sum of its proper divisors (138347128).

155564072 is a wasteful number, since it uses less digits than its factorization.

155564072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148576 (or 148572 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 155564072 is about 12472.5327019014. The cubic root of 155564072 is about 537.8193632639.

The spelling of 155564072 in words is "one hundred fifty-five million, five hundred sixty-four thousand, seventy-two".