54781251 has 8 divisors (see below), whose sum is σ = 83476224. Its totient is φ = 31303560.

The previous prime is 54781249. The next prime is 54781267. The reversal of 54781251 is 15218745.

54781251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54781251 - 2¹ = 54781249 is a prime.

It is a super-2 number, since 2×54781251² = 6001970922250002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54781241) 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 7 ways as a sum of consecutive naturals, for example, 1304295 + ... + 1304336.

It is an arithmetic number, because the mean of its divisors is an integer number (10434528).

Almost surely, 2^54781251 is an apocalyptic number.

54781251 is a deficient number, since it is larger than the sum of its proper divisors (28694973).

54781251 is a wasteful number, since it uses less digits than its factorization.

54781251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608641.

The product of its digits is 11200, while the sum is 33.

The square root of 54781251 is about 7401.4357390982. The cubic root of 54781251 is about 379.7903991832.

Adding to 54781251 its reverse (15218745), we get a palindrome (69999996).

The spelling of 54781251 in words is "fifty-four million, seven hundred eighty-one thousand, two hundred fifty-one".