90511011 has 12 divisors (see below), whose sum is σ = 132394080. Its totient is φ = 59576400.

The previous prime is 90510997. The next prime is 90511027. The reversal of 90511011 is 11011509.

It is not a de Polignac number, because 90511011 - 2⁷ = 90510883 is a prime.

It is a super-2 number, since 2×90511011² = 16384486224484242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90511081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62940 + ... + 64361.

It is an arithmetic number, because the mean of its divisors is an integer number (11032840).

Almost surely, 2^90511011 is an apocalyptic number.

90511011 is a deficient number, since it is larger than the sum of its proper divisors (41883069).

90511011 is a wasteful number, since it uses less digits than its factorization.

90511011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127386 (or 127383 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 18.

The square root of 90511011 is about 9513.7275029296. The cubic root of 90511011 is about 448.9870400341.

The spelling of 90511011 in words is "ninety million, five hundred eleven thousand, eleven".