54121431 has 48 divisors (see below), whose sum is σ = 91521024. Its totient is φ = 28195776.

The previous prime is 54121429. The next prime is 54121469. The reversal of 54121431 is 13412145.

It is not a de Polignac number, because 54121431 - 2¹ = 54121429 is a prime.

It is a super-2 number, since 2×54121431² = 5858258586975522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 54121398 and 54121407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54121531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242586 + ... + 242808.

It is an arithmetic number, because the mean of its divisors is an integer number (1906688).

Almost surely, 2^54121431 is an apocalyptic number.

54121431 is a deficient number, since it is larger than the sum of its proper divisors (37399593).

54121431 is a wasteful number, since it uses less digits than its factorization.

54121431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 373 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 54121431 is about 7356.7269216684. The cubic root of 54121431 is about 378.2594241094.

Adding to 54121431 its reverse (13412145), we get a palindrome (67533576).

The spelling of 54121431 in words is "fifty-four million, one hundred twenty-one thousand, four hundred thirty-one".