2521471 has 4 divisors (see below), whose sum is σ = 2654200. Its totient is φ = 2388744.

The previous prime is 2521469. The next prime is 2521481. The reversal of 2521471 is 1741252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2521471 - 2¹ = 2521469 is a prime.

It is a super-3 number, since 3×2521471³ = 48093146031062910333, which contains 333 as substring.

It is a Duffinian number.

2521471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66336 + ... + 66373.

It is an arithmetic number, because the mean of its divisors is an integer number (663550).

2^2521471 is an apocalyptic number.

2521471 is a deficient number, since it is larger than the sum of its proper divisors (132729).

2521471 is a wasteful number, since it uses less digits than its factorization.

2521471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132728.

The product of its digits is 560, while the sum is 22.

The square root of 2521471 is about 1587.9140404946. The cubic root of 2521471 is about 136.1083155271.

It can be divided in two parts, 2521 and 471, that added together give a palindrome (2992).

The spelling of 2521471 in words is "two million, five hundred twenty-one thousand, four hundred seventy-one".