2131755 has 32 divisors (see below), whose sum is σ = 3677184. Its totient is φ = 1051776.

The previous prime is 2131721. The next prime is 2131771. The reversal of 2131755 is 5571312.

It is not a de Polignac number, because 2131755 - 2⁶ = 2131691 is a prime.

2131755 is a lucky number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12682 + ... + 12848.

It is an arithmetic number, because the mean of its divisors is an integer number (114912).

2^2131755 is an apocalyptic number.

2131755 is a deficient number, since it is larger than the sum of its proper divisors (1545429).

2131755 is a wasteful number, since it uses less digits than its factorization.

2131755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235.

The product of its digits is 1050, while the sum is 24.

The square root of 2131755 is about 1460.0530812268. The cubic root of 2131755 is about 128.7001629466.

The spelling of 2131755 in words is "two million, one hundred thirty-one thousand, seven hundred fifty-five".