2153551 has 2 divisors, whose sum is σ = 2153552. Its totient is φ = 2153550.

The previous prime is 2153531. The next prime is 2153561. The reversal of 2153551 is 1553512.

2153551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2153551 - 2⁵ = 2153519 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076775 + 1076776.

It is an arithmetic number, because the mean of its divisors is an integer number (1076776).

2^2153551 is an apocalyptic number.

2153551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153551 is an equidigital number, since it uses as much as digits as its factorization.

2153551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 750, while the sum is 22.

The square root of 2153551 is about 1467.4982112425. The cubic root of 2153551 is about 129.1373054780.

It can be divided in two parts, 2153 and 551, that added together give a square (2704 = 52²).

The spelling of 2153551 in words is "two million, one hundred fifty-three thousand, five hundred fifty-one".