55148788 has 6 divisors (see below), whose sum is σ = 96510386. Its totient is φ = 27574392.

The previous prime is 55148729. The next prime is 55148789. The reversal of 55148788 is 88784155.

It can be written as a sum of positive squares in only one way, i.e., 31606884 + 23541904 = 5622^2 + 4852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55148789) 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 as a sum of consecutive naturals, namely, 6893595 + ... + 6893602.

Almost surely, 2^55148788 is an apocalyptic number.

It is an amenable number.

55148788 is a deficient number, since it is larger than the sum of its proper divisors (41361598).

55148788 is a wasteful number, since it uses less digits than its factorization.

55148788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13787201 (or 13787199 counting only the distinct ones).

The product of its digits is 358400, while the sum is 46.

The square root of 55148788 is about 7426.2229969211. Note that the first 3 decimals coincide. The cubic root of 55148788 is about 380.6378668145.

The spelling of 55148788 in words is "fifty-five million, one hundred forty-eight thousand, seven hundred eighty-eight".