55920589 has 2 divisors, whose sum is σ = 55920590. Its totient is φ = 55920588.

The previous prime is 55920577. The next prime is 55920607. The reversal of 55920589 is 98502955.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50552100 + 5368489 = 7110^2 + 2317^2 .

It is a cyclic number.

It is not a de Polignac number, because 55920589 - 2⁷ = 55920461 is a prime.

It is a super-2 number, since 2×55920589² = 6254224548213842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55920539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27960294 + 27960295.

It is an arithmetic number, because the mean of its divisors is an integer number (27960295).

Almost surely, 2^55920589 is an apocalyptic number.

It is an amenable number.

55920589 is a deficient number, since it is larger than the sum of its proper divisors (1).

55920589 is an equidigital number, since it uses as much as digits as its factorization.

55920589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 43.

The square root of 55920589 is about 7478.0070205904. The cubic root of 55920589 is about 382.4053084125.

The spelling of 55920589 in words is "fifty-five million, nine hundred twenty thousand, five hundred eighty-nine".