2620155 has 16 divisors (see below), whose sum is σ = 4306464. Its totient is φ = 1359360.

The previous prime is 2620153. The next prime is 2620171. The reversal of 2620155 is 5510262.

It is not a de Polignac number, because 2620155 - 2¹ = 2620153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (269154).

2^2620155 is an apocalyptic number.

2620155 is a deficient number, since it is larger than the sum of its proper divisors (1686309).

2620155 is a wasteful number, since it uses less digits than its factorization.

2620155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2620155 is about 1618.6892845756. The cubic root of 2620155 is about 137.8612867876.

It can be divided in two parts, 2620 and 155, that added together give a triangular number (2775 = T₇₄).

The spelling of 2620155 in words is "two million, six hundred twenty thousand, one hundred fifty-five".