2521071 has 16 divisors (see below), whose sum is σ = 4268800. Its totient is φ = 1440504.

The previous prime is 2521067. The next prime is 2521073. The reversal of 2521071 is 1701252.

It is not a de Polignac number, because 2521071 - 2² = 2521067 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6481 + ... + 6858.

It is an arithmetic number, because the mean of its divisors is an integer number (266800).

2^2521071 is an apocalyptic number.

2521071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2521071 is a deficient number, since it is larger than the sum of its proper divisors (1747729).

2521071 is a wasteful number, since it uses less digits than its factorization.

2521071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355 (or 13349 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 2521071 is about 1587.7880840969. The cubic root of 2521071 is about 136.1011178496.

It can be divided in two parts, 25210 and 71, that added together give a square (25281 = 159²).

The spelling of 2521071 in words is "two million, five hundred twenty-one thousand, seventy-one".