2102254505 has 16 divisors (see below), whose sum is σ = 2722691664. Its totient is φ = 1549044480.

The previous prime is 2102254489. The next prime is 2102254589. The reversal of 2102254505 is 5054522012.

It can be written as a sum of positive squares in 8 ways, for example, as 572740624 + 1529513881 = 23932^2 + 39109^2 .

It is not a de Polignac number, because 2102254505 - 2⁴ = 2102254489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5114 + ... + 65043.

It is an arithmetic number, because the mean of its divisors is an integer number (170168229).

Almost surely, 2^2102254505 is an apocalyptic number.

It is an amenable number.

2102254505 is a deficient number, since it is larger than the sum of its proper divisors (620437159).

2102254505 is a wasteful number, since it uses less digits than its factorization.

2102254505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70636.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2102254505 is about 45850.3490172103. The cubic root of 2102254505 is about 1281.0372665088.

Adding to 2102254505 its reverse (5054522012), we get a palindrome (7156776517).

The spelling of 2102254505 in words is "two billion, one hundred two million, two hundred fifty-four thousand, five hundred five".