2517481 has 4 divisors (see below), whose sum is σ = 2650000. Its totient is φ = 2384964.

The previous prime is 2517469. The next prime is 2517499. The reversal of 2517481 is 1847152.

2517481 = T₁₂₉₄ + T₁₂₉₅ + T₁₂₉₆.

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 2517481 - 2¹⁹ = 1993193 is a prime.

It is a super-2 number, since 2×2517481² = 12675421170722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2517401) 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, 66231 + ... + 66268.

It is an arithmetic number, because the mean of its divisors is an integer number (662500).

2^2517481 is an apocalyptic number.

2517481 is the 1296-th centered triangular number.

It is an amenable number.

2517481 is a deficient number, since it is larger than the sum of its proper divisors (132519).

2517481 is a wasteful number, since it uses less digits than its factorization.

2517481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132518.

The product of its digits is 2240, while the sum is 28.

The square root of 2517481 is about 1586.6571778428. The cubic root of 2517481 is about 136.0364845886.

The spelling of 2517481 in words is "two million, five hundred seventeen thousand, four hundred eighty-one".