55071559 has 2 divisors, whose sum is σ = 55071560. Its totient is φ = 55071558.

The previous prime is 55071553. The next prime is 55071571. The reversal of 55071559 is 95517055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55071559 - 2²¹ = 52974407 is a prime.

It is a super-2 number, since 2×55071559² = 6065753221380962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55071553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27535779 + 27535780.

It is an arithmetic number, because the mean of its divisors is an integer number (27535780).

Almost surely, 2^55071559 is an apocalyptic number.

55071559 is a deficient number, since it is larger than the sum of its proper divisors (1).

55071559 is an equidigital number, since it uses as much as digits as its factorization.

55071559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39375, while the sum is 37.

The square root of 55071559 is about 7421.0214256529. The cubic root of 55071559 is about 380.4601051899.

The spelling of 55071559 in words is "fifty-five million, seventy-one thousand, five hundred fifty-nine".