55020585 has 16 divisors (see below), whose sum is σ = 93211776. Its totient is φ = 27618048.

The previous prime is 55020583. The next prime is 55020587. The reversal of 55020585 is 58502055.

It is an interprime number because it is at equal distance from previous prime (55020583) and next prime (55020587).

It is not a de Polignac number, because 55020585 - 2¹ = 55020583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55020583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107629 + ... + 108138.

It is an arithmetic number, because the mean of its divisors is an integer number (5825736).

Almost surely, 2^55020585 is an apocalyptic number.

It is an amenable number.

55020585 is a deficient number, since it is larger than the sum of its proper divisors (38191191).

55020585 is a wasteful number, since it uses less digits than its factorization.

55020585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215792.

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 55020585 is about 7417.5861976791. The cubic root of 55020585 is about 380.3426848713.

The spelling of 55020585 in words is "fifty-five million, twenty thousand, five hundred eighty-five".