4020555401 has 8 divisors (see below), whose sum is σ = 4262613600. Its totient is φ = 3781542240.

The previous prime is 4020555397. The next prime is 4020555449. The reversal of 4020555401 is 1045550204.

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 4020555401 - 2² = 4020555397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020552401) 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, 758540 + ... + 763821.

It is an arithmetic number, because the mean of its divisors is an integer number (532826700).

Almost surely, 2^4020555401 is an apocalyptic number.

It is an amenable number.

4020555401 is a deficient number, since it is larger than the sum of its proper divisors (242058199).

4020555401 is a wasteful number, since it uses less digits than its factorization.

4020555401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522519.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 4020555401 is about 63407.8496796729. The cubic root of 4020555401 is about 1590.1155462356.

The spelling of 4020555401 in words is "four billion, twenty million, five hundred fifty-five thousand, four hundred one".