2520770261 has 16 divisors (see below), whose sum is σ = 2773424640. Its totient is φ = 2280461040.

The previous prime is 2520770257. The next prime is 2520770267. The reversal of 2520770261 is 1620770252.

It is not a de Polignac number, because 2520770261 - 2² = 2520770257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520770267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276506 + ... + 285476.

It is an arithmetic number, because the mean of its divisors is an integer number (173339040).

Almost surely, 2^2520770261 is an apocalyptic number.

It is an amenable number.

2520770261 is a deficient number, since it is larger than the sum of its proper divisors (252654379).

2520770261 is a wasteful number, since it uses less digits than its factorization.

2520770261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9656.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2520770261 is about 50207.2729890800. The cubic root of 2520770261 is about 1360.9570579237.

Subtracting from 2520770261 its reverse (1620770252), we obtain a palindrome (900000009).

The spelling of 2520770261 in words is "two billion, five hundred twenty million, seven hundred seventy thousand, two hundred sixty-one".