5401555 has 4 divisors (see below), whose sum is σ = 6481872. Its totient is φ = 4321240.

The previous prime is 5401553. The next prime is 5401559. The reversal of 5401555 is 5551045.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5401555 - 2¹ = 5401553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5401553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540151 + ... + 540160.

It is an arithmetic number, because the mean of its divisors is an integer number (1620468).

Almost surely, 2^5401555 is an apocalyptic number.

5401555 is a deficient number, since it is larger than the sum of its proper divisors (1080317).

5401555 is a wasteful number, since it uses less digits than its factorization.

5401555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080316.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 5401555 is about 2324.1245663690. The cubic root of 5401555 is about 175.4579028528.

The spelling of 5401555 in words is "five million, four hundred one thousand, five hundred fifty-five".