55240123551 has 16 divisors (see below), whose sum is σ = 73873188480. Its totient is φ = 36716983200.

The previous prime is 55240123529. The next prime is 55240123607. The reversal of 55240123551 is 15532104255.

It is not a de Polignac number, because 55240123551 - 2⁹ = 55240123039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55240123501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3318816 + ... + 3335418.

It is an arithmetic number, because the mean of its divisors is an integer number (4617074280).

Almost surely, 2^55240123551 is an apocalyptic number.

55240123551 is a deficient number, since it is larger than the sum of its proper divisors (18633064929).

55240123551 is a wasteful number, since it uses less digits than its factorization.

55240123551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19846.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 55240123551 in words is "fifty-five billion, two hundred forty million, one hundred twenty-three thousand, five hundred fifty-one".