54312491 has 2 divisors, whose sum is σ = 54312492. Its totient is φ = 54312490.

The previous prime is 54312487. The next prime is 54312493. The reversal of 54312491 is 19421345.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54312491 - 2² = 54312487 is a prime.

Together with 54312493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54312493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27156245 + 27156246.

It is an arithmetic number, because the mean of its divisors is an integer number (27156246).

Almost surely, 2^54312491 is an apocalyptic number.

54312491 is a deficient number, since it is larger than the sum of its proper divisors (1).

54312491 is an equidigital number, since it uses as much as digits as its factorization.

54312491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 54312491 is about 7369.7008758836. The cubic root of 54312491 is about 378.7040130495.

The spelling of 54312491 in words is "fifty-four million, three hundred twelve thousand, four hundred ninety-one".