55870471 has 2 divisors, whose sum is σ = 55870472. Its totient is φ = 55870470.

The previous prime is 55870439. The next prime is 55870511. The reversal of 55870471 is 17407855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55870471 - 2⁵ = 55870439 is a prime.

It is a super-3 number, since 3×55870471³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55870471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55874471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27935235 + 27935236.

It is an arithmetic number, because the mean of its divisors is an integer number (27935236).

Almost surely, 2^55870471 is an apocalyptic number.

55870471 is a deficient number, since it is larger than the sum of its proper divisors (1).

55870471 is an equidigital number, since it uses as much as digits as its factorization.

55870471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 55870471 is about 7474.6552428858. The cubic root of 55870471 is about 382.2910325676.

The spelling of 55870471 in words is "fifty-five million, eight hundred seventy thousand, four hundred seventy-one".