55957471 has 2 divisors, whose sum is σ = 55957472. Its totient is φ = 55957470.

The previous prime is 55957463. The next prime is 55957477. The reversal of 55957471 is 17475955.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55957471 - 2³ = 55957463 is a prime.

It is a super-3 number, since 3×55957471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55957477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27978735 + 27978736.

It is an arithmetic number, because the mean of its divisors is an integer number (27978736).

Almost surely, 2^55957471 is an apocalyptic number.

55957471 is a deficient number, since it is larger than the sum of its proper divisors (1).

55957471 is an equidigital number, since it uses as much as digits as its factorization.

55957471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 220500, while the sum is 43.

The square root of 55957471 is about 7480.4726454951. The cubic root of 55957471 is about 382.4893607760.

The spelling of 55957471 in words is "fifty-five million, nine hundred fifty-seven thousand, four hundred seventy-one".