2100257461 has 4 divisors (see below), whose sum is σ = 2129838624. Its totient is φ = 2070676300.

The previous prime is 2100257449. The next prime is 2100257491. The reversal of 2100257461 is 1647520012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100257461 is a prime.

It is a super-2 number, since 2×2100257461² = 8822162804972333042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100257491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14790475 + ... + 14790616.

It is an arithmetic number, because the mean of its divisors is an integer number (532459656).

Almost surely, 2^2100257461 is an apocalyptic number.

It is an amenable number.

2100257461 is a deficient number, since it is larger than the sum of its proper divisors (29581163).

2100257461 is an equidigital number, since it uses as much as digits as its factorization.

2100257461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29581162.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2100257461 is about 45828.5659932754. The cubic root of 2100257461 is about 1280.6314960541.

Adding to 2100257461 its reverse (1647520012), we get a palindrome (3747777473).

The spelling of 2100257461 in words is "two billion, one hundred million, two hundred fifty-seven thousand, four hundred sixty-one".