90471055 has 4 divisors (see below), whose sum is σ = 108565272. Its totient is φ = 72376840.

The previous prime is 90471049. The next prime is 90471067. The reversal of 90471055 is 55017409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55017409 = 37 ⋅1486957.

It is not a de Polignac number, because 90471055 - 2³ = 90471047 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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, 9047101 + ... + 9047110.

It is an arithmetic number, because the mean of its divisors is an integer number (27141318).

Almost surely, 2^90471055 is an apocalyptic number.

90471055 is a deficient number, since it is larger than the sum of its proper divisors (18094217).

90471055 is a wasteful number, since it uses less digits than its factorization.

90471055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18094216.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 90471055 is about 9511.6273581338. The cubic root of 90471055 is about 448.9209620088.

The spelling of 90471055 in words is "ninety million, four hundred seventy-one thousand, fifty-five".