905047055 has 32 divisors (see below), whose sum is σ = 1207353600. Its totient is φ = 645765120.

The previous prime is 905047019. The next prime is 905047063. The reversal of 905047055 is 550740509.

It is a Cunningham number, because it is equal to 30084²-1.

It is not a de Polignac number, because 905047055 - 2¹² = 905042959 is a prime.

It is a super-2 number, since 2×905047055² = 1638220343528346050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1654292 + ... + 1654838.

It is an arithmetic number, because the mean of its divisors is an integer number (37729800).

Almost surely, 2^905047055 is an apocalyptic number.

905047055 is a deficient number, since it is larger than the sum of its proper divisors (302306545).

905047055 is a wasteful number, since it uses less digits than its factorization.

905047055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 905047055 is about 30083.9999833799. Note that the first 4 decimals coincide. The cubic root of 905047055 is about 967.2907910970.

The spelling of 905047055 in words is "nine hundred five million, forty-seven thousand, fifty-five".