55619259 has 8 divisors (see below), whose sum is σ = 74226240. Its totient is φ = 37045896.

The previous prime is 55619237. The next prime is 55619261. The reversal of 55619259 is 95291655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55619259 - 2⁷ = 55619131 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 55619259.

It is not an unprimeable number, because it can be changed into a prime (55619209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4249 + ... + 11370.

It is an arithmetic number, because the mean of its divisors is an integer number (9278280).

Almost surely, 2^55619259 is an apocalyptic number.

55619259 is a deficient number, since it is larger than the sum of its proper divisors (18606981).

55619259 is a wasteful number, since it uses less digits than its factorization.

55619259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16809.

The product of its digits is 121500, while the sum is 42.

The square root of 55619259 is about 7457.8320576425. The cubic root of 55619259 is about 381.7172029555.

The spelling of 55619259 in words is "fifty-five million, six hundred nineteen thousand, two hundred fifty-nine".