55237283720 has 64 divisors (see below), whose sum is σ = 127791460080. Its totient is φ = 21472736256.

The previous prime is 55237283653. The next prime is 55237283749. The reversal of 55237283720 is 2738273255.

It can be written as a sum of positive squares in 8 ways, for example, as 54678339556 + 558944164 = 233834^2 + 23642^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276682 + ... + 1319238.

Almost surely, 2^55237283720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55237283720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63895730040).

55237283720 is an abundant number, since it is smaller than the sum of its proper divisors (72554176360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55237283720 is a wasteful number, since it uses less digits than its factorization.

55237283720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43482 (or 43478 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 55237283720 in words is "fifty-five billion, two hundred thirty-seven million, two hundred eighty-three thousand, seven hundred twenty".