2521955 has 16 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 1940448.

The previous prime is 2521949. The next prime is 2521969. The reversal of 2521955 is 5591252.

It is a cyclic number.

It is not a de Polignac number, because 2521955 - 2¹⁸ = 2259811 is a prime.

Its product of digits (4500) is a multiple of the sum of its prime divisors (250).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24434 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (196560).

2^2521955 is an apocalyptic number.

2521955 is a deficient number, since it is larger than the sum of its proper divisors (623005).

2521955 is a wasteful number, since it uses less digits than its factorization.

2521955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its digits is 4500, while the sum is 29.

The square root of 2521955 is about 1588.0664343786. The cubic root of 2521955 is about 136.1170236992.

The spelling of 2521955 in words is "two million, five hundred twenty-one thousand, nine hundred fifty-five".