4055621 has 8 divisors (see below), whose sum is σ = 4237920. Its totient is φ = 3876208.

The previous prime is 4055599. The next prime is 4055627. The reversal of 4055621 is 1265504.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4055621 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 (4055627) 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, 2450 + ... + 3756.

It is an arithmetic number, because the mean of its divisors is an integer number (529740).

Almost surely, 2^4055621 is an apocalyptic number.

It is an amenable number.

4055621 is a deficient number, since it is larger than the sum of its proper divisors (182299).

4055621 is a wasteful number, since it uses less digits than its factorization.

4055621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 4055621 is about 2013.8572441958. The cubic root of 4055621 is about 159.4724945446.

The spelling of 4055621 in words is "four million, fifty-five thousand, six hundred twenty-one".