54140251 has 4 divisors (see below), whose sum is σ = 59062104. Its totient is φ = 49218400.

The previous prime is 54140249. The next prime is 54140263. The reversal of 54140251 is 15204145.

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

It is not a de Polignac number, because 54140251 - 2¹ = 54140249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54120251) 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, 2460910 + ... + 2460931.

It is an arithmetic number, because the mean of its divisors is an integer number (14765526).

Almost surely, 2^54140251 is an apocalyptic number.

54140251 is a deficient number, since it is larger than the sum of its proper divisors (4921853).

54140251 is a wasteful number, since it uses less digits than its factorization.

54140251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921852.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 54140251 is about 7358.0059119302. The cubic root of 54140251 is about 378.3032639047.

Adding to 54140251 its reverse (15204145), we get a palindrome (69344396).

The spelling of 54140251 in words is "fifty-four million, one hundred forty thousand, two hundred fifty-one".