55102577 has 4 divisors (see below), whose sum is σ = 55139700. Its totient is φ = 55065456.

The previous prime is 55102543. The next prime is 55102601. The reversal of 55102577 is 77520155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13512976 + 41589601 = 3676^2 + 6449^2 .

It is a cyclic number.

It is not a de Polignac number, because 55102577 - 2¹⁸ = 54840433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55102477) 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, 16238 + ... + 19335.

It is an arithmetic number, because the mean of its divisors is an integer number (13784925).

Almost surely, 2^55102577 is an apocalyptic number.

It is an amenable number.

55102577 is a deficient number, since it is larger than the sum of its proper divisors (37123).

55102577 is a wasteful number, since it uses less digits than its factorization.

55102577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37122.

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 55102577 is about 7423.1110055017. Note that the first 3 decimals coincide. The cubic root of 55102577 is about 380.5315207376.

The spelling of 55102577 in words is "fifty-five million, one hundred two thousand, five hundred seventy-seven".