55071617 has 4 divisors (see below), whose sum is σ = 55129536. Its totient is φ = 55013700.

The previous prime is 55071613. The next prime is 55071631. The reversal of 55071617 is 71617055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55071617 - 2² = 55071613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55071613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27509 + ... + 29442.

It is an arithmetic number, because the mean of its divisors is an integer number (13782384).

Almost surely, 2^55071617 is an apocalyptic number.

It is an amenable number.

55071617 is a deficient number, since it is larger than the sum of its proper divisors (57919).

55071617 is an equidigital number, since it uses as much as digits as its factorization.

55071617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57918.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 55071617 is about 7421.0253334698. The cubic root of 55071617 is about 380.4602387536.

The spelling of 55071617 in words is "fifty-five million, seventy-one thousand, six hundred seventeen".