155656552 has 8 divisors (see below), whose sum is σ = 291856050. Its totient is φ = 77828272.

The previous prime is 155656547. The next prime is 155656583. The reversal of 155656552 is 255656551.

It can be written as a sum of positive squares in only one way, i.e., 151437636 + 4218916 = 12306^2 + 2054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 9728527 + ... + 9728542.

Almost surely, 2^155656552 is an apocalyptic number.

It is an amenable number.

155656552 is a deficient number, since it is larger than the sum of its proper divisors (136199498).

155656552 is a wasteful number, since it uses less digits than its factorization.

155656552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19457075 (or 19457071 counting only the distinct ones).

The product of its digits is 225000, while the sum is 40.

The square root of 155656552 is about 12476.2394975409. The cubic root of 155656552 is about 537.9259167487.

Subtracting 155656552 from its reverse (255656551), we obtain a palindrome (99999999).

The spelling of 155656552 in words is "one hundred fifty-five million, six hundred fifty-six thousand, five hundred fifty-two".