2520417391 has 2 divisors, whose sum is σ = 2520417392. Its totient is φ = 2520417390.

The previous prime is 2520417379. The next prime is 2520417407. The reversal of 2520417391 is 1937140252.

It is a happy number.

2520417391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2520417391 - 2¹¹ = 2520415343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2520417311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260208695 + 1260208696.

It is an arithmetic number, because the mean of its divisors is an integer number (1260208696).

Almost surely, 2^2520417391 is an apocalyptic number.

2520417391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520417391 is an equidigital number, since it uses as much as digits as its factorization.

2520417391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2520417391 is about 50203.7587337841. The cubic root of 2520417391 is about 1360.8935504402.

The spelling of 2520417391 in words is "two billion, five hundred twenty million, four hundred seventeen thousand, three hundred ninety-one".