2520231 has 8 divisors (see below), whose sum is σ = 3840384. Its totient is φ = 1440120.

The previous prime is 2520211. The next prime is 2520241. The reversal of 2520231 is 1320252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2520231 is a prime.

It is a super-2 number, since 2×2520231² = 12703128586722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (15) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2520231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59985 + ... + 60026.

It is an arithmetic number, because the mean of its divisors is an integer number (480048).

2^2520231 is an apocalyptic number.

2520231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2520231 is a deficient number, since it is larger than the sum of its proper divisors (1320153).

2520231 is a wasteful number, since it uses less digits than its factorization.

2520231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120021.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2520231 is about 1587.5235431325. The cubic root of 2520231 is about 136.0860002483.

Adding to 2520231 its reverse (1320252), we get a palindrome (3840483).

The spelling of 2520231 in words is "two million, five hundred twenty thousand, two hundred thirty-one".