55100077 has 8 divisors (see below), whose sum is σ = 58563000. Its totient is φ = 51661824.

The previous prime is 55100069. The next prime is 55100081. The reversal of 55100077 is 77000155.

It can be written as a sum of positive squares in 4 ways, for example, as 7365796 + 47734281 = 2714^2 + 6909^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55100077 - 2³ = 55100069 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 (55100677) 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, 1452 + ... + 10597.

It is an arithmetic number, because the mean of its divisors is an integer number (7320375).

Almost surely, 2^55100077 is an apocalyptic number.

It is an amenable number.

55100077 is a deficient number, since it is larger than the sum of its proper divisors (3462923).

55100077 is a wasteful number, since it uses less digits than its factorization.

55100077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12335.

The product of its (nonzero) digits is 1225, while the sum is 25.

The square root of 55100077 is about 7422.9426105824. The cubic root of 55100077 is about 380.5257657546.

The spelling of 55100077 in words is "fifty-five million, one hundred thousand, seventy-seven".