2100537 has 12 divisors (see below), whose sum is σ = 3212820. Its totient is φ = 1317888.

The previous prime is 2100533. The next prime is 2100541. The reversal of 2100537 is 7350012.

It is an interprime number because it is at equal distance from previous prime (2100533) and next prime (2100541).

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 881721 = 1104^2 + 939^2 .

It is not a de Polignac number, because 2100537 - 2² = 2100533 is a prime.

2100537 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2100533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6712 + ... + 7017.

It is an arithmetic number, because the mean of its divisors is an integer number (267735).

2^2100537 is an apocalyptic number.

It is an amenable number.

2100537 is a deficient number, since it is larger than the sum of its proper divisors (1112283).

2100537 is a wasteful number, since it uses less digits than its factorization.

2100537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13752 (or 13749 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 2100537 is about 1449.3229453783. The cubic root of 2100537 is about 128.0688309814.

Adding to 2100537 its reverse (7350012), we get a palindrome (9450549).

The spelling of 2100537 in words is "two million, one hundred thousand, five hundred thirty-seven".