55889629 has 2 divisors, whose sum is σ = 55889630. Its totient is φ = 55889628.

The previous prime is 55889623. The next prime is 55889633. The reversal of 55889629 is 92698855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31337604 + 24552025 = 5598^2 + 4955^2 .

It is a cyclic number.

It is not a de Polignac number, because 55889629 - 2⁷ = 55889501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55889623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27944814 + 27944815.

It is an arithmetic number, because the mean of its divisors is an integer number (27944815).

Almost surely, 2^55889629 is an apocalyptic number.

It is an amenable number.

55889629 is a deficient number, since it is larger than the sum of its proper divisors (1).

55889629 is an equidigital number, since it uses as much as digits as its factorization.

55889629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 52.

The square root of 55889629 is about 7475.9366637231. The cubic root of 55889629 is about 382.3347234745.

The spelling of 55889629 in words is "fifty-five million, eight hundred eighty-nine thousand, six hundred twenty-nine".