54591931 has 2 divisors, whose sum is σ = 54591932. Its totient is φ = 54591930.

The previous prime is 54591917. The next prime is 54591937. The reversal of 54591931 is 13919545.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54591931 - 2⁹ = 54591419 is a prime.

It is a super-2 number, since 2×54591931² = 5960557860617522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54591937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27295965 + 27295966.

It is an arithmetic number, because the mean of its divisors is an integer number (27295966).

Almost surely, 2^54591931 is an apocalyptic number.

54591931 is a deficient number, since it is larger than the sum of its proper divisors (1).

54591931 is an equidigital number, since it uses as much as digits as its factorization.

54591931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 37.

The square root of 54591931 is about 7388.6352596403. The cubic root of 54591931 is about 379.3523849252.

The spelling of 54591931 in words is "fifty-four million, five hundred ninety-one thousand, nine hundred thirty-one".