7855401 has 4 divisors (see below), whose sum is σ = 10473872. Its totient is φ = 5236932.

The previous prime is 7855399. The next prime is 7855403. The reversal of 7855401 is 1045587.

7855401 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 an interprime number because it is at equal distance from previous prime (7855399) and next prime (7855403).

It is not a de Polignac number, because 7855401 - 2¹ = 7855399 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 (7855403) 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, 1309231 + ... + 1309236.

It is an arithmetic number, because the mean of its divisors is an integer number (2618468).

Almost surely, 2^7855401 is an apocalyptic number.

It is an amenable number.

7855401 is a deficient number, since it is larger than the sum of its proper divisors (2618471).

7855401 is a wasteful number, since it uses less digits than its factorization.

7855401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618470.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 7855401 is about 2802.7488292746. The cubic root of 7855401 is about 198.7876745162.

It can be divided in two parts, 7855 and 401, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 7855401 in words is "seven million, eight hundred fifty-five thousand, four hundred one".