54431851 has 4 divisors (see below), whose sum is σ = 55697752. Its totient is φ = 53165952.

The previous prime is 54431849. The next prime is 54431857. The reversal of 54431851 is 15813445.

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

It is a cyclic number.

It is not a de Polignac number, because 54431851 - 2¹ = 54431849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54431857) 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, 632886 + ... + 632971.

It is an arithmetic number, because the mean of its divisors is an integer number (13924438).

Almost surely, 2^54431851 is an apocalyptic number.

54431851 is a deficient number, since it is larger than the sum of its proper divisors (1265901).

54431851 is a wasteful number, since it uses less digits than its factorization.

54431851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265900.

The product of its digits is 9600, while the sum is 31.

The square root of 54431851 is about 7377.7944536291. The cubic root of 54431851 is about 378.9812300560.

The spelling of 54431851 in words is "fifty-four million, four hundred thirty-one thousand, eight hundred fifty-one".