2154513 has 4 divisors (see below), whose sum is σ = 2872688. Its totient is φ = 1436340.

The previous prime is 2154499. The next prime is 2154533. The reversal of 2154513 is 3154512.

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 not a de Polignac number, because 2154513 - 2¹² = 2150417 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2154513.

It is not an unprimeable number, because it can be changed into a prime (2154533) 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, 359083 + ... + 359088.

It is an arithmetic number, because the mean of its divisors is an integer number (718172).

2^2154513 is an apocalyptic number.

It is an amenable number.

2154513 is a deficient number, since it is larger than the sum of its proper divisors (718175).

2154513 is an equidigital number, since it uses as much as digits as its factorization.

2154513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718174.

The product of its digits is 600, while the sum is 21.

The square root of 2154513 is about 1467.8259433598. The cubic root of 2154513 is about 129.1565313356.

Subtracting 2154513 from its reverse (3154512), we obtain a palindrome (999999).

The spelling of 2154513 in words is "two million, one hundred fifty-four thousand, five hundred thirteen".