55579553 has 2 divisors, whose sum is σ = 55579554. Its totient is φ = 55579552.

The previous prime is 55579507. The next prime is 55579571. The reversal of 55579553 is 35597555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37063744 + 18515809 = 6088^2 + 4303^2 .

It is a cyclic number.

It is not a de Polignac number, because 55579553 - 2¹⁴ = 55563169 is a prime.

It is not a weakly prime, because it can be changed into another prime (55579583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27789776 + 27789777.

It is an arithmetic number, because the mean of its divisors is an integer number (27789777).

Almost surely, 2^55579553 is an apocalyptic number.

It is an amenable number.

55579553 is a deficient number, since it is larger than the sum of its proper divisors (1).

55579553 is an equidigital number, since it uses as much as digits as its factorization.

55579553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 590625, while the sum is 44.

The square root of 55579553 is about 7455.1695487091. The cubic root of 55579553 is about 381.6263467086.

It can be divided in two parts, 555 and 79553, that added together give a palindrome (80108).

The spelling of 55579553 in words is "fifty-five million, five hundred seventy-nine thousand, five hundred fifty-three".