54140531 has 2 divisors, whose sum is σ = 54140532. Its totient is φ = 54140530.

The previous prime is 54140521. The next prime is 54140543. The reversal of 54140531 is 13504145.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54140531 is a prime.

It is a super-2 number, since 2×54140531² = 5862394193923922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_3234092 and since 54140531 and 3234092 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 54140497 and 54140506.

It is not a weakly prime, because it can be changed into another prime (54140521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27070265 + 27070266.

It is an arithmetic number, because the mean of its divisors is an integer number (27070266).

Almost surely, 2^54140531 is an apocalyptic number.

54140531 is a deficient number, since it is larger than the sum of its proper divisors (1).

54140531 is an equidigital number, since it uses as much as digits as its factorization.

54140531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 54140531 is about 7358.0249387998. The cubic root of 54140531 is about 378.3039160672.

Adding to 54140531 its reverse (13504145), we get a palindrome (67644676).

The spelling of 54140531 in words is "fifty-four million, one hundred forty thousand, five hundred thirty-one".