5401251 has 24 divisors (see below), whose sum is σ = 8255520. Its totient is φ = 3396096.

The previous prime is 5401247. The next prime is 5401259. The reversal of 5401251 is 1521045.

5401251 is a `hidden beast` number, since 540 + 125 + 1 = 666.

It is not a de Polignac number, because 5401251 - 2² = 5401247 is a prime.

5401251 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19945 + ... + 20213.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^5401251 is an apocalyptic number.

5401251 is a deficient number, since it is larger than the sum of its proper divisors (2854269).

5401251 is a wasteful number, since it uses less digits than its factorization.

5401251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 5401251 is about 2324.0591644793. The cubic root of 5401251 is about 175.4546111956.

Adding to 5401251 its reverse (1521045), we get a palindrome (6922296).

The spelling of 5401251 in words is "five million, four hundred one thousand, two hundred fifty-one".