4021551401 has 4 divisors (see below), whose sum is σ = 4596058752. Its totient is φ = 3447044052.

The previous prime is 4021551397. The next prime is 4021551409. The reversal of 4021551401 is 1041551204.

4021551401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4021551401 - 2² = 4021551397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4021551409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287253665 + ... + 287253678.

It is an arithmetic number, because the mean of its divisors is an integer number (1149014688).

Almost surely, 2^4021551401 is an apocalyptic number.

It is an amenable number.

4021551401 is a deficient number, since it is larger than the sum of its proper divisors (574507351).

4021551401 is an equidigital number, since it uses as much as digits as its factorization.

4021551401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574507350.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 4021551401 is about 63415.7031105073. The cubic root of 4021551401 is about 1590.2468402289.

The spelling of 4021551401 in words is "four billion, twenty-one million, five hundred fifty-one thousand, four hundred one".