55245719 has 4 divisors (see below), whose sum is σ = 55329960. Its totient is φ = 55161480.

The previous prime is 55245709. The next prime is 55245781. The reversal of 55245719 is 91754255.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55245719 - 2¹² = 55241623 is a prime.

It is a super-2 number, since 2×55245719² = 6104178935653922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55245709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41129 + ... + 42450.

It is an arithmetic number, because the mean of its divisors is an integer number (13832490).

Almost surely, 2^55245719 is an apocalyptic number.

55245719 is a deficient number, since it is larger than the sum of its proper divisors (84241).

55245719 is an equidigital number, since it uses as much as digits as its factorization.

55245719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84240.

The product of its digits is 63000, while the sum is 38.

The square root of 55245719 is about 7432.7463968576. The cubic root of 55245719 is about 380.8607427546.

The spelling of 55245719 in words is "fifty-five million, two hundred forty-five thousand, seven hundred nineteen".