55782123 has 16 divisors (see below), whose sum is σ = 75933696. Its totient is φ = 36416160.

The previous prime is 55782071. The next prime is 55782127. The reversal of 55782123 is 32128755.

It is not a de Polignac number, because 55782123 - 2¹² = 55778027 is a prime.

It is a super-2 number, since 2×55782123² = 6223290492774258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55782127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37665 + ... + 39117.

It is an arithmetic number, because the mean of its divisors is an integer number (4745856).

Almost surely, 2^55782123 is an apocalyptic number.

55782123 is a deficient number, since it is larger than the sum of its proper divisors (20151573).

55782123 is a wasteful number, since it uses less digits than its factorization.

55782123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714.

The product of its digits is 16800, while the sum is 33.

The square root of 55782123 is about 7468.7430669424. The cubic root of 55782123 is about 382.0894206021.

The spelling of 55782123 in words is "fifty-five million, seven hundred eighty-two thousand, one hundred twenty-three".