2421667755 has 36 divisors (see below), whose sum is σ = 4545298368. Its totient is φ = 1192201920.

The previous prime is 2421667753. The next prime is 2421667757. The reversal of 2421667755 is 5577661242.

It is an interprime number because it is at equal distance from previous prime (2421667753) and next prime (2421667757).

It is not a de Polignac number, because 2421667755 - 2¹ = 2421667753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2421667755.

It is not an unprimeable number, because it can be changed into a prime (2421667753) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 151611 + ... + 166820.

It is an arithmetic number, because the mean of its divisors is an integer number (126258288).

Almost surely, 2^2421667755 is an apocalyptic number.

2421667755 is a deficient number, since it is larger than the sum of its proper divisors (2123630613).

2421667755 is a wasteful number, since it uses less digits than its factorization.

2421667755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318468 (or 318452 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 2421667755 is about 49210.4435562209. The cubic root of 2421667755 is about 1342.8830320975.

The spelling of 2421667755 in words is "two billion, four hundred twenty-one million, six hundred sixty-seven thousand, seven hundred fifty-five".