55294819 has 2 divisors, whose sum is σ = 55294820. Its totient is φ = 55294818.

The previous prime is 55294777. The next prime is 55294843. The reversal of 55294819 is 91849255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55294819 - 2²⁵ = 21740387 is a prime.

It is a super-2 number, since 2×55294819² = 6115034016485522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55294219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27647409 + 27647410.

It is an arithmetic number, because the mean of its divisors is an integer number (27647410).

Almost surely, 2^55294819 is an apocalyptic number.

55294819 is a deficient number, since it is larger than the sum of its proper divisors (1).

55294819 is an equidigital number, since it uses as much as digits as its factorization.

55294819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 43.

The square root of 55294819 is about 7436.0486146878. The cubic root of 55294819 is about 380.9735401836.

The spelling of 55294819 in words is "fifty-five million, two hundred ninety-four thousand, eight hundred nineteen".