920555 has 4 divisors (see below), whose sum is σ = 1104672. Its totient is φ = 736440.

The previous prime is 920539. The next prime is 920561. The reversal of 920555 is 555029.

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

It is not a de Polignac number, because 920555 - 2⁴ = 920539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92051 + ... + 92060.

It is an arithmetic number, because the mean of its divisors is an integer number (276168).

2⁹²⁰⁵⁵⁵ is an apocalyptic number.

920555 is a deficient number, since it is larger than the sum of its proper divisors (184117).

920555 is a wasteful number, since it uses less digits than its factorization.

920555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184116.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 920555 is about 959.4555747923. The cubic root of 920555 is about 97.2784361831.

The spelling of 920555 in words is "nine hundred twenty thousand, five hundred fifty-five".