55592091 has 24 divisors (see below), whose sum is σ = 85722624. Its totient is φ = 34594560.

The previous prime is 55592041. The next prime is 55592107. The reversal of 55592091 is 19029555.

It is not a de Polignac number, because 55592091 - 2¹¹ = 55590043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55592041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18001 + ... + 20861.

It is an arithmetic number, because the mean of its divisors is an integer number (3571776).

Almost surely, 2^55592091 is an apocalyptic number.

55592091 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55592091 is a deficient number, since it is larger than the sum of its proper divisors (30130533).

55592091 is a wasteful number, since it uses less digits than its factorization.

55592091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 55592091 is about 7456.0103943061. The cubic root of 55592091 is about 381.6550411423.

The spelling of 55592091 in words is "fifty-five million, five hundred ninety-two thousand, ninety-one".