2513551 has 2 divisors, whose sum is σ = 2513552. Its totient is φ = 2513550.

The previous prime is 2513549. The next prime is 2513557. The reversal of 2513551 is 1553152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2513551 - 2¹ = 2513549 is a prime.

Together with 2513549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2513557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256775 + 1256776.

It is an arithmetic number, because the mean of its divisors is an integer number (1256776).

2^2513551 is an apocalyptic number.

2513551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2513551 is an equidigital number, since it uses as much as digits as its factorization.

2513551 is an evil number, because the sum of its binary digits is even.

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

The square root of 2513551 is about 1585.4182413483. The cubic root of 2513551 is about 135.9656595823.

The spelling of 2513551 in words is "two million, five hundred thirteen thousand, five hundred fifty-one".