2475870721 has 2 divisors, whose sum is σ = 2475870722. Its totient is φ = 2475870720.

The previous prime is 2475870703. The next prime is 2475870743. The reversal of 2475870721 is 1270785742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2373638400 + 102232321 = 48720^2 + 10111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2475870721 - 2⁹ = 2475870209 is a prime.

It is a super-2 number, since 2×2475870721² = 12259871654210119682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2475870821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1237935360 + 1237935361.

It is an arithmetic number, because the mean of its divisors is an integer number (1237935361).

Almost surely, 2^2475870721 is an apocalyptic number.

It is an amenable number.

2475870721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2475870721 is an equidigital number, since it uses as much as digits as its factorization.

2475870721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219520, while the sum is 43.

The square root of 2475870721 is about 49758.1221611105. The cubic root of 2475870721 is about 1352.8282218710.

The spelling of 2475870721 in words is "two billion, four hundred seventy-five million, eight hundred seventy thousand, seven hundred twenty-one".