90551912 has 16 divisors (see below), whose sum is σ = 185220000. Its totient is φ = 41159920.

The previous prime is 90551873. The next prime is 90551917. The reversal of 90551912 is 21915509.

It is not an unprimeable number, because it can be changed into a prime (90551917) 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, 514412 + ... + 514587.

It is an arithmetic number, because the mean of its divisors is an integer number (11576250).

Almost surely, 2^90551912 is an apocalyptic number.

It is an amenable number.

90551912 is an abundant number, since it is smaller than the sum of its proper divisors (94668088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90551912 is a wasteful number, since it uses less digits than its factorization.

90551912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029016 (or 1029012 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 90551912 is about 9515.8768382110. The cubic root of 90551912 is about 449.0546607330.

The spelling of 90551912 in words is "ninety million, five hundred fifty-one thousand, nine hundred twelve".