55788553 has 2 divisors, whose sum is σ = 55788554. Its totient is φ = 55788552.

The previous prime is 55788539. The next prime is 55788569. The reversal of 55788553 is 35588755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53392249 + 2396304 = 7307^2 + 1548^2 .

It is a cyclic number.

It is not a de Polignac number, because 55788553 - 2²¹ = 53691401 is a prime.

It is a super-2 number, since 2×55788553² = 6224725291667618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55788583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27894276 + 27894277.

It is an arithmetic number, because the mean of its divisors is an integer number (27894277).

Almost surely, 2^55788553 is an apocalyptic number.

It is an amenable number.

55788553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55788553 is an equidigital number, since it uses as much as digits as its factorization.

55788553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840000, while the sum is 46.

The square root of 55788553 is about 7469.1735151889. The cubic root of 55788553 is about 382.1041011751.

The spelling of 55788553 in words is "fifty-five million, seven hundred eighty-eight thousand, five hundred fifty-three".