2520357481 has 2 divisors, whose sum is σ = 2520357482. Its totient is φ = 2520357480.

The previous prime is 2520357473. The next prime is 2520357517. The reversal of 2520357481 is 1847530252.

2520357481 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 can be written as a sum of positive squares in only one way, i.e., 2471581225 + 48776256 = 49715^2 + 6984^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520357481 - 2³ = 2520357473 is a prime.

It is a super-2 number, since 2×2520357481² = 12704403664065330722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2520357481.

It is not a weakly prime, because it can be changed into another prime (2520357401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260178740 + 1260178741.

It is an arithmetic number, because the mean of its divisors is an integer number (1260178741).

Almost surely, 2^2520357481 is an apocalyptic number.

It is an amenable number.

2520357481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520357481 is an equidigital number, since it uses as much as digits as its factorization.

2520357481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 2520357481 is about 50203.1620617666. The cubic root of 2520357481 is about 1360.8827675993.

The spelling of 2520357481 in words is "two billion, five hundred twenty million, three hundred fifty-seven thousand, four hundred eighty-one".