55031251053320 has 32 divisors (see below), whose sum is σ = 123820528380120. Its totient is φ = 22012462464000.

The previous prime is 55031251053281. The next prime is 55031251053323. The reversal of 55031251053320 is 2335015213055.

It can be written as a sum of positive squares in 4 ways, for example, as 34389803375524 + 20641447677796 = 5864282^2 + 4543286^2 .

It is not an unprimeable number, because it can be changed into a prime (55031251053323) 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, 39698624 + ... + 41061456.

Almost surely, 2^{55031251053320} is an apocalyptic number.

It is an amenable number.

55031251053320 is an abundant number, since it is smaller than the sum of its proper divisors (68789277326800).

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

55031251053320 is a wasteful number, since it uses less digits than its factorization.

55031251053320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372345 (or 2372341 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 35.

Adding to 55031251053320 its reverse (2335015213055), we get a palindrome (57366266266375).

The spelling of 55031251053320 in words is "fifty-five trillion, thirty-one billion, two hundred fifty-one million, fifty-three thousand, three hundred twenty".