2720551 has 2 divisors, whose sum is σ = 2720552. Its totient is φ = 2720550.

The previous prime is 2720513. The next prime is 2720563. The reversal of 2720551 is 1550272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2720551 - 2¹⁷ = 2589479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2720251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360275 + 1360276.

It is an arithmetic number, because the mean of its divisors is an integer number (1360276).

2^2720551 is an apocalyptic number.

2720551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720551 is an equidigital number, since it uses as much as digits as its factorization.

2720551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2720551 is about 1649.4092881999. The cubic root of 2720551 is about 139.6000660914.

The spelling of 2720551 in words is "two million, seven hundred twenty thousand, five hundred fifty-one".