54665531 has 2 divisors, whose sum is σ = 54665532. Its totient is φ = 54665530.

The previous prime is 54665519. The next prime is 54665561. The reversal of 54665531 is 13556645.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54665531 - 2⁶ = 54665467 is a prime.

It is a super-2 number, since 2×54665531² = 5976640559023922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 54665491 and 54665500.

It is not a weakly prime, because it can be changed into another prime (54665561) 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, 27332765 + 27332766.

It is an arithmetic number, because the mean of its divisors is an integer number (27332766).

Almost surely, 2^54665531 is an apocalyptic number.

54665531 is a deficient number, since it is larger than the sum of its proper divisors (1).

54665531 is an equidigital number, since it uses as much as digits as its factorization.

54665531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 35.

The square root of 54665531 is about 7393.6142041629. The cubic root of 54665531 is about 379.5227873830.

The spelling of 54665531 in words is "fifty-four million, six hundred sixty-five thousand, five hundred thirty-one".