55242621239 has 16 divisors (see below), whose sum is σ = 62727581280. Its totient is φ = 48228825600.

The previous prime is 55242621211. The next prime is 55242621241. The reversal of 55242621239 is 93212624255.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55242621239 is a prime.

It is a super-2 number, since 2×55242621239² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55242621196 and 55242621205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55242021239) 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, 37622 + ... + 334515.

It is an arithmetic number, because the mean of its divisors is an integer number (3920473830).

Almost surely, 2^55242621239 is an apocalyptic number.

55242621239 is a deficient number, since it is larger than the sum of its proper divisors (7484960041).

55242621239 is a wasteful number, since it uses less digits than its factorization.

55242621239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372770.

The product of its digits is 259200, while the sum is 41.

The spelling of 55242621239 in words is "fifty-five billion, two hundred forty-two million, six hundred twenty-one thousand, two hundred thirty-nine".