2055501 has 36 divisors (see below), whose sum is σ = 3556800. Its totient is φ = 1140048.

The previous prime is 2055497. The next prime is 2055503. The reversal of 2055501 is 1055502.

It is not a de Polignac number, because 2055501 - 2² = 2055497 is a prime.

It is a super-2 number, since 2×2055501² = 8450168722002, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055503) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25980 + ... + 26058.

It is an arithmetic number, because the mean of its divisors is an integer number (98800).

2^2055501 is an apocalyptic number.

2055501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2055501 is a deficient number, since it is larger than the sum of its proper divisors (1501299).

2055501 is a wasteful number, since it uses less digits than its factorization.

2055501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 2055501 is about 1433.7018518507. The cubic root of 2055501 is about 127.1469355615.

Subtracting from 2055501 its reverse (1055502), we obtain a palindrome (999999).

It can be divided in two parts, 2055 and 501, that added together give a triangular number (2556 = T₇₁).

The spelling of 2055501 in words is "two million, fifty-five thousand, five hundred one".