55189529 has 2 divisors, whose sum is σ = 55189530. Its totient is φ = 55189528.

The previous prime is 55189513. The next prime is 55189543. The reversal of 55189529 is 92598155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28944400 + 26245129 = 5380^2 + 5123^2 .

It is a cyclic number.

It is not a de Polignac number, because 55189529 - 2⁴ = 55189513 is a prime.

It is a super-2 number, since 2×55189529² = 6091768222483682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55189529.

It is not a weakly prime, because it can be changed into another prime (55189549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27594764 + 27594765.

It is an arithmetic number, because the mean of its divisors is an integer number (27594765).

Almost surely, 2^55189529 is an apocalyptic number.

It is an amenable number.

55189529 is a deficient number, since it is larger than the sum of its proper divisors (1).

55189529 is an equidigital number, since it uses as much as digits as its factorization.

55189529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 44.

The square root of 55189529 is about 7428.9655403697. The cubic root of 55189529 is about 380.7315754328.

The spelling of 55189529 in words is "fifty-five million, one hundred eighty-nine thousand, five hundred twenty-nine".