55223419 has 2 divisors, whose sum is σ = 55223420. Its totient is φ = 55223418.

The previous prime is 55223411. The next prime is 55223447. The reversal of 55223419 is 91432255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55223419 - 2³ = 55223411 is a prime.

It is a super-2 number, since 2×55223419² = 6099252012099122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55223411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27611709 + 27611710.

It is an arithmetic number, because the mean of its divisors is an integer number (27611710).

Almost surely, 2^55223419 is an apocalyptic number.

55223419 is a deficient number, since it is larger than the sum of its proper divisors (1).

55223419 is an equidigital number, since it uses as much as digits as its factorization.

55223419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 55223419 is about 7431.2461269965. The cubic root of 55223419 is about 380.8094908945.

The spelling of 55223419 in words is "fifty-five million, two hundred twenty-three thousand, four hundred nineteen".