55208619 has 12 divisors (see below), whose sum is σ = 79883856. Its totient is φ = 36742032.

The previous prime is 55208611. The next prime is 55208627. The reversal of 55208619 is 91680255.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55208611) and next prime (55208627).

It is not a de Polignac number, because 55208619 - 2³ = 55208611 is a prime.

It is a super-2 number, since 2×55208619² = 6095983223774322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55208611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514 + ... + 10520.

It is an arithmetic number, because the mean of its divisors is an integer number (6656988).

Almost surely, 2^55208619 is an apocalyptic number.

55208619 is a deficient number, since it is larger than the sum of its proper divisors (24675237).

55208619 is a wasteful number, since it uses less digits than its factorization.

55208619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10626 (or 10623 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 55208619 is about 7430.2502649642. The cubic root of 55208619 is about 380.7754685894.

The spelling of 55208619 in words is "fifty-five million, two hundred eight thousand, six hundred nineteen".