2517923 has 4 divisors (see below), whose sum is σ = 2536440. Its totient is φ = 2499408.

The previous prime is 2517919. The next prime is 2517929. The reversal of 2517923 is 3297152.

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 2517923 - 2² = 2517919 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 5⁹ + 1 + 7² + 9⁶ + 2¹⁵ + 3³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2517929) 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, 9053 + ... + 9326.

It is an arithmetic number, because the mean of its divisors is an integer number (634110).

2^2517923 is an apocalyptic number.

2517923 is a deficient number, since it is larger than the sum of its proper divisors (18517).

2517923 is a wasteful number, since it uses less digits than its factorization.

2517923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18516.

The product of its digits is 3780, while the sum is 29.

The square root of 2517923 is about 1586.7964582769. The cubic root of 2517923 is about 136.0444455368.

The spelling of 2517923 in words is "two million, five hundred seventeen thousand, nine hundred twenty-three".