55122782 has 16 divisors (see below), whose sum is σ = 97139952. Its totient is φ = 23128320.

The previous prime is 55122779. The next prime is 55122787. The reversal of 55122782 is 28722155.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55122787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96083 + ... + 96654.

It is an arithmetic number, because the mean of its divisors is an integer number (6071247).

Almost surely, 2^55122782 is an apocalyptic number.

55122782 is a deficient number, since it is larger than the sum of its proper divisors (42017170).

55122782 is a wasteful number, since it uses less digits than its factorization.

55122782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192763.

The product of its digits is 11200, while the sum is 32.

The square root of 55122782 is about 7424.4718330666. The cubic root of 55122782 is about 380.5780261235.

The spelling of 55122782 in words is "fifty-five million, one hundred twenty-two thousand, seven hundred eighty-two".