55819571 has 2 divisors, whose sum is σ = 55819572. Its totient is φ = 55819570.

The previous prime is 55819567. The next prime is 55819607. The reversal of 55819571 is 17591855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55819571 - 2² = 55819567 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55819271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27909785 + 27909786.

It is an arithmetic number, because the mean of its divisors is an integer number (27909786).

Almost surely, 2^55819571 is an apocalyptic number.

55819571 is a deficient number, since it is larger than the sum of its proper divisors (1).

55819571 is an equidigital number, since it uses as much as digits as its factorization.

55819571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 41.

The square root of 55819571 is about 7471.2496277397. The cubic root of 55819571 is about 382.1749036874.

The spelling of 55819571 in words is "fifty-five million, eight hundred nineteen thousand, five hundred seventy-one".