54331493 has 2 divisors, whose sum is σ = 54331494. Its totient is φ = 54331492.

The previous prime is 54331463. The next prime is 54331513. The reversal of 54331493 is 39413345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 3323329 = 7142^2 + 1823^2 .

It is a cyclic number.

It is not a de Polignac number, because 54331493 - 2²² = 50137189 is a prime.

It is a super-2 number, since 2×54331493² = 5903822263218098, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54331423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27165746 + 27165747.

It is an arithmetic number, because the mean of its divisors is an integer number (27165747).

Almost surely, 2^54331493 is an apocalyptic number.

It is an amenable number.

54331493 is a deficient number, since it is larger than the sum of its proper divisors (1).

54331493 is an equidigital number, since it uses as much as digits as its factorization.

54331493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 54331493 is about 7370.9899606498. The cubic root of 54331493 is about 378.7481729009.

The spelling of 54331493 in words is "fifty-four million, three hundred thirty-one thousand, four hundred ninety-three".