55528999 has 2 divisors, whose sum is σ = 55529000. Its totient is φ = 55528998.

The previous prime is 55528973. The next prime is 55529027. The reversal of 55528999 is 99982555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55528999 - 2²³ = 47140391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55528799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27764499 + 27764500.

It is an arithmetic number, because the mean of its divisors is an integer number (27764500).

Almost surely, 2^55528999 is an apocalyptic number.

55528999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55528999 is an equidigital number, since it uses as much as digits as its factorization.

55528999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 52.

The square root of 55528999 is about 7451.7782441509. The cubic root of 55528999 is about 381.5106051594.

The spelling of 55528999 in words is "fifty-five million, five hundred twenty-eight thousand, nine hundred ninety-nine".