2103451 has 4 divisors (see below), whose sum is σ = 2403952. Its totient is φ = 1802952.

The previous prime is 2103449. The next prime is 2103473. The reversal of 2103451 is 1543012.

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 2103451 - 2¹ = 2103449 is a prime.

It is a super-2 number, since 2×2103451² = 8849012218802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103151) 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, 150240 + ... + 150253.

It is an arithmetic number, because the mean of its divisors is an integer number (600988).

2^2103451 is an apocalyptic number.

2103451 is a deficient number, since it is larger than the sum of its proper divisors (300501).

2103451 is an equidigital number, since it uses as much as digits as its factorization.

2103451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300500.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2103451 is about 1450.3278939605. The cubic root of 2103451 is about 128.1280253896.

Adding to 2103451 its reverse (1543012), we get a palindrome (3646463).

The spelling of 2103451 in words is "two million, one hundred three thousand, four hundred fifty-one".