2531801 has 4 divisors (see below), whose sum is σ = 2613504. Its totient is φ = 2450100.

The previous prime is 2531777. The next prime is 2531803. The reversal of 2531801 is 1081352.

2531801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2531801 - 2¹⁰ = 2530777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40805 + ... + 40866.

It is an arithmetic number, because the mean of its divisors is an integer number (653376).

2^2531801 is an apocalyptic number.

It is an amenable number.

2531801 is a deficient number, since it is larger than the sum of its proper divisors (81703).

2531801 is an equidigital number, since it uses as much as digits as its factorization.

2531801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81702.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2531801 is about 1591.1634108413. The cubic root of 2531801 is about 136.2939324704.

The spelling of 2531801 in words is "two million, five hundred thirty-one thousand, eight hundred one".