2134551 has 4 divisors (see below), whose sum is σ = 2846072. Its totient is φ = 1423032.

The previous prime is 2134549. The next prime is 2134579. The reversal of 2134551 is 1554312.

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

It is not a de Polignac number, because 2134551 - 2¹ = 2134549 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 1 + 3¹¹ + 4⁵ + 5⁵ + 5⁹ + 1 .

It is a D-number.

It is a Duffinian number.

2134551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2134351) 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, 355756 + ... + 355761.

It is an arithmetic number, because the mean of its divisors is an integer number (711518).

2^2134551 is an apocalyptic number.

2134551 is a deficient number, since it is larger than the sum of its proper divisors (711521).

2134551 is an equidigital number, since it uses as much as digits as its factorization.

2134551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711520.

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

The square root of 2134551 is about 1461.0102669044. The cubic root of 2134551 is about 128.7564058773.

Adding to 2134551 its reverse (1554312), we get a palindrome (3688863).

The spelling of 2134551 in words is "two million, one hundred thirty-four thousand, five hundred fifty-one".