55259819 has 8 divisors (see below), whose sum is σ = 57250560. Its totient is φ = 53274816.

The previous prime is 55259807. The next prime is 55259821. The reversal of 55259819 is 91895255.

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

It is a cyclic number.

It is not a de Polignac number, because 55259819 - 2¹⁶ = 55194283 is a prime.

It is a super-2 number, since 2×55259819² = 6107295191825522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55259819.

It is not an unprimeable number, because it can be changed into a prime (55259849) 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, 30647 + ... + 32399.

It is an arithmetic number, because the mean of its divisors is an integer number (7156320).

Almost surely, 2^55259819 is an apocalyptic number.

55259819 is a deficient number, since it is larger than the sum of its proper divisors (1990741).

55259819 is a wasteful number, since it uses less digits than its factorization.

55259819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869.

The product of its digits is 162000, while the sum is 44.

The square root of 55259819 is about 7433.6948417325. The cubic root of 55259819 is about 380.8931415224.

The spelling of 55259819 in words is "fifty-five million, two hundred fifty-nine thousand, eight hundred nineteen".