2253761021 has 16 divisors (see below), whose sum is σ = 2369357760. Its totient is φ = 2141354880.

The previous prime is 2253760997. The next prime is 2253761033. The reversal of 2253761021 is 1201673522.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2253761021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2253791021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666491 + ... + 669863.

It is an arithmetic number, because the mean of its divisors is an integer number (148084860).

Almost surely, 2^2253761021 is an apocalyptic number.

It is an amenable number.

2253761021 is a deficient number, since it is larger than the sum of its proper divisors (115596739).

2253761021 is a wasteful number, since it uses less digits than its factorization.

2253761021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2253761021 is about 47473.7929915022. The cubic root of 2253761021 is about 1311.1004138819.

The spelling of 2253761021 in words is "two billion, two hundred fifty-three million, seven hundred sixty-one thousand, twenty-one".