4621755421 has 8 divisors (see below), whose sum is σ = 4657163840. Its totient is φ = 4586378112.

The previous prime is 4621755403. The next prime is 4621755427. The reversal of 4621755421 is 1245571264.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4621755421 - 2⁹ = 4621754909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4621755427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354016 + ... + 366838.

It is an arithmetic number, because the mean of its divisors is an integer number (582145480).

Almost surely, 2^4621755421 is an apocalyptic number.

It is an amenable number.

4621755421 is a deficient number, since it is larger than the sum of its proper divisors (35408419).

4621755421 is a wasteful number, since it uses less digits than its factorization.

4621755421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555.

The product of its digits is 67200, while the sum is 37.

The square root of 4621755421 is about 67983.4937392894. The cubic root of 4621755421 is about 1665.7212254170.

The spelling of 4621755421 in words is "four billion, six hundred twenty-one million, seven hundred fifty-five thousand, four hundred twenty-one".