90055761 has 8 divisors (see below), whose sum is σ = 121765824. Its totient is φ = 59191440.

The previous prime is 90055751. The next prime is 90055781. The reversal of 90055761 is 16755009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90055761 - 2⁵ = 90055729 is a prime.

It is a super-2 number, since 2×90055761² = 16220080178578242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90055711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211186 + ... + 211611.

It is an arithmetic number, because the mean of its divisors is an integer number (15220728).

Almost surely, 2^90055761 is an apocalyptic number.

It is an amenable number.

90055761 is a deficient number, since it is larger than the sum of its proper divisors (31710063).

90055761 is a wasteful number, since it uses less digits than its factorization.

90055761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422871.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 90055761 is about 9489.7713881842. The cubic root of 90055761 is about 448.2330065152.

The spelling of 90055761 in words is "ninety million, fifty-five thousand, seven hundred sixty-one".