55507780053 has 12 divisors (see below), whose sum is σ = 87466805088. Its totient is φ = 33641078760.

The previous prime is 55507780051. The next prime is 55507780073. The reversal of 55507780053 is 35008770555.

It is not a de Polignac number, because 55507780053 - 2¹ = 55507780051 is a prime.

It is a super-2 number, since 2×55507780053² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55507779990 and 55507780008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55507780051) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 280342225 + ... + 280342422.

It is an arithmetic number, because the mean of its divisors is an integer number (7288900424).

Almost surely, 2^55507780053 is an apocalyptic number.

It is an amenable number.

55507780053 is a deficient number, since it is larger than the sum of its proper divisors (31959025035).

55507780053 is a wasteful number, since it uses less digits than its factorization.

55507780053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560684664 (or 560684661 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 45.

The spelling of 55507780053 in words is "fifty-five billion, five hundred seven million, seven hundred eighty thousand, fifty-three".