155555648 has 14 divisors (see below), whose sum is σ = 308680866. Its totient is φ = 77777792.

The previous prime is 155555633. The next prime is 155555651. The reversal of 155555648 is 846555551.

It can be written as a sum of positive squares in only one way, i.e., 106667584 + 48888064 = 10328^2 + 6992^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155555599 and 155555608.

It is a congruent number.

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, 1215215 + ... + 1215342.

Almost surely, 2^155555648 is an apocalyptic number.

It is an amenable number.

155555648 is a deficient number, since it is larger than the sum of its proper divisors (153125218).

155555648 is an equidigital number, since it uses as much as digits as its factorization.

155555648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430569 (or 2430559 counting only the distinct ones).

The product of its digits is 600000, while the sum is 44.

The square root of 155555648 is about 12472.1949952685. The cubic root of 155555648 is about 537.8096552123.

The spelling of 155555648 in words is "one hundred fifty-five million, five hundred fifty-five thousand, six hundred forty-eight".