55175861 has 8 divisors (see below), whose sum is σ = 59492664. Its totient is φ = 50869440.

The previous prime is 55175851. The next prime is 55175899. The reversal of 55175861 is 16857155.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2540836 + 52635025 = 1594^2 + 7255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55175861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55175851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11195 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (7436583).

Almost surely, 2^55175861 is an apocalyptic number.

It is an amenable number.

55175861 is a deficient number, since it is larger than the sum of its proper divisors (4316803).

55175861 is a wasteful number, since it uses less digits than its factorization.

55175861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191.

The product of its digits is 42000, while the sum is 38.

The square root of 55175861 is about 7428.0455706734. The cubic root of 55175861 is about 380.7001427262.

The spelling of 55175861 in words is "fifty-five million, one hundred seventy-five thousand, eight hundred sixty-one".