2507246721 has 48 divisors (see below), whose sum is σ = 4327914240. Its totient is φ = 1367562240.

The previous prime is 2507246711. The next prime is 2507246723. The reversal of 2507246721 is 1276427052.

It is a happy number.

It is not a de Polignac number, because 2507246721 - 2⁵ = 2507246689 is a prime.

It is a super-2 number, since 2×2507246721² = 12572572239930503682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2507246723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 822961 + ... + 826001.

It is an arithmetic number, because the mean of its divisors is an integer number (90164880).

Almost surely, 2^2507246721 is an apocalyptic number.

2507246721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2507246721 is a deficient number, since it is larger than the sum of its proper divisors (1820667519).

2507246721 is a wasteful number, since it uses less digits than its factorization.

2507246721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3646 (or 3643 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 2507246721 is about 50072.4147710094. The cubic root of 2507246721 is about 1358.5189183877.

The spelling of 2507246721 in words is "two billion, five hundred seven million, two hundred forty-six thousand, seven hundred twenty-one".