55856377 has 4 divisors (see below), whose sum is σ = 56006500. Its totient is φ = 55706256.

The previous prime is 55856363. The next prime is 55856387. The reversal of 55856377 is 77365855.

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 10374841 + 45481536 = 3221^2 + 6744^2 .

It is a cyclic number.

It is not a de Polignac number, because 55856377 - 2¹¹ = 55854329 is a prime.

It is a super-2 number, since 2×55856377² = 6239869703132258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55856357) 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, 74502 + ... + 75247.

It is an arithmetic number, because the mean of its divisors is an integer number (14001625).

Almost surely, 2^55856377 is an apocalyptic number.

It is an amenable number.

55856377 is a deficient number, since it is larger than the sum of its proper divisors (150123).

55856377 is a wasteful number, since it uses less digits than its factorization.

55856377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150122.

The product of its digits is 882000, while the sum is 46.

The square root of 55856377 is about 7473.7123974635. The cubic root of 55856377 is about 382.2588840233.

The spelling of 55856377 in words is "fifty-five million, eight hundred fifty-six thousand, three hundred seventy-seven".