55219756 has 12 divisors (see below), whose sum is σ = 96775840. Its totient is φ = 27569520.

The previous prime is 55219751. The next prime is 55219763. The reversal of 55219756 is 65791255.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55219751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6900 + ... + 12571.

Almost surely, 2^55219756 is an apocalyptic number.

It is an amenable number.

55219756 is a deficient number, since it is larger than the sum of its proper divisors (41556084).

55219756 is a wasteful number, since it uses less digits than its factorization.

55219756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20184 (or 20182 counting only the distinct ones).

The product of its digits is 94500, while the sum is 40.

The square root of 55219756 is about 7430.9996635715. Note that the first 3 decimals coincide. The cubic root of 55219756 is about 380.8010709401.

The spelling of 55219756 in words is "fifty-five million, two hundred nineteen thousand, seven hundred fifty-six".