2520251766 has 64 divisors (see below), whose sum is σ = 5805480960. Its totient is φ = 809883360.

The previous prime is 2520251761. The next prime is 2520251791. The reversal of 2520251766 is 6671520252.

It is a super-2 number, since 2×2520251766² = 12703337928052237512, 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 2520251766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520251761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162636 + ... + 177456.

It is an arithmetic number, because the mean of its divisors is an integer number (90710640).

Almost surely, 2^2520251766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2520251766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2902740480).

2520251766 is an abundant number, since it is smaller than the sum of its proper divisors (3285229194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2520251766 is a wasteful number, since it uses less digits than its factorization.

2520251766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14946 (or 14940 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 2520251766 is about 50202.1091787985. The cubic root of 2520251766 is about 1360.8637401751.

The spelling of 2520251766 in words is "two billion, five hundred twenty million, two hundred fifty-one thousand, seven hundred sixty-six".