55347619 has 4 divisors (see below), whose sum is σ = 55386280. Its totient is φ = 55308960.

The previous prime is 55347599. The next prime is 55347629. The reversal of 55347619 is 91674355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91674355 = 5 ⋅18334871.

It is a cyclic number.

It is not a de Polignac number, because 55347619 - 2⁷ = 55347491 is a prime.

It is a super-2 number, since 2×55347619² = 6126717857938322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55347629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17097 + ... + 20074.

It is an arithmetic number, because the mean of its divisors is an integer number (13846570).

Almost surely, 2^55347619 is an apocalyptic number.

55347619 is a deficient number, since it is larger than the sum of its proper divisors (38661).

55347619 is a wasteful number, since it uses less digits than its factorization.

55347619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38660.

The product of its digits is 113400, while the sum is 40.

The square root of 55347619 is about 7439.5980402170. The cubic root of 55347619 is about 381.0947631364.

The spelling of 55347619 in words is "fifty-five million, three hundred forty-seven thousand, six hundred nineteen".