55287272 has 8 divisors (see below), whose sum is σ = 103663650. Its totient is φ = 27643632.

The previous prime is 55287259. The next prime is 55287313. The reversal of 55287272 is 27278255.

It can be written as a sum of positive squares in only one way, i.e., 47141956 + 8145316 = 6866^2 + 2854^2 .

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

55287272 is a modest number, since divided by 7272 gives 5528 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3455447 + ... + 3455462.

Almost surely, 2^55287272 is an apocalyptic number.

It is an amenable number.

55287272 is a deficient number, since it is larger than the sum of its proper divisors (48376378).

55287272 is a wasteful number, since it uses less digits than its factorization.

55287272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6910915 (or 6910911 counting only the distinct ones).

The product of its digits is 78400, while the sum is 38.

The square root of 55287272 is about 7435.5411369987. The cubic root of 55287272 is about 380.9562068048.

The spelling of 55287272 in words is "fifty-five million, two hundred eighty-seven thousand, two hundred seventy-two".