2421997455 has 16 divisors (see below), whose sum is σ = 3876354144. Its totient is φ = 1291345920.

The previous prime is 2421997453. The next prime is 2421997483. The reversal of 2421997455 is 5547991242.

It is a happy number.

It is not a de Polignac number, because 2421997455 - 2¹ = 2421997453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421997453) 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, 31935 + ... + 76575.

It is an arithmetic number, because the mean of its divisors is an integer number (242272134).

Almost surely, 2^2421997455 is an apocalyptic number.

2421997455 is a deficient number, since it is larger than the sum of its proper divisors (1454356689).

2421997455 is a wasteful number, since it uses less digits than its factorization.

2421997455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48266.

The product of its digits is 907200, while the sum is 48.

The square root of 2421997455 is about 49213.7933408917. The cubic root of 2421997455 is about 1342.9439719799.

The spelling of 2421997455 in words is "two billion, four hundred twenty-one million, nine hundred ninety-seven thousand, four hundred fifty-five".