2100051245 has 8 divisors (see below), whose sum is σ = 2520315000. Its totient is φ = 1679872000.

The previous prime is 2100051223. The next prime is 2100051253. The reversal of 2100051245 is 5421500012.

It can be written as a sum of positive squares in 4 ways, for example, as 786858601 + 1313192644 = 28051^2 + 36238^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2100051245 - 2⁶ = 2100051181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66881 + ... + 93129.

It is an arithmetic number, because the mean of its divisors is an integer number (315039375).

Almost surely, 2^2100051245 is an apocalyptic number.

It is an amenable number.

2100051245 is a deficient number, since it is larger than the sum of its proper divisors (420263755).

2100051245 is a wasteful number, since it uses less digits than its factorization.

2100051245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42255.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2100051245 is about 45826.3160749367. The cubic root of 2100051245 is about 1280.5895812963.

Adding to 2100051245 its reverse (5421500012), we get a palindrome (7521551257).

The spelling of 2100051245 in words is "two billion, one hundred million, fifty-one thousand, two hundred forty-five".