55501011 has 16 divisors (see below), whose sum is σ = 82734720. Its totient is φ = 36770760.

The previous prime is 55500989. The next prime is 55501027. The reversal of 55501011 is 11010555.

It is not a de Polignac number, because 55501011 - 2⁷ = 55500883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55501091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1905 + ... + 10706.

It is an arithmetic number, because the mean of its divisors is an integer number (5170920).

Almost surely, 2^55501011 is an apocalyptic number.

55501011 is a deficient number, since it is larger than the sum of its proper divisors (27233709).

55501011 is a wasteful number, since it uses less digits than its factorization.

55501011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12783 (or 12777 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The square root of 55501011 is about 7449.9000664438. The cubic root of 55501011 is about 381.4464974352.

Adding to 55501011 its reverse (11010555), we get a palindrome (66511566).

It can be divided in two parts, 5550 and 1011, that added together give a 8-th power (6561 = 3⁸).

The spelling of 55501011 in words is "fifty-five million, five hundred one thousand, eleven".