54252909 has 18 divisors (see below), whose sum is σ = 81385070. Its totient is φ = 36164232.

The previous prime is 54252907. The next prime is 54252911. The reversal of 54252909 is 90925245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54252907) and next prime (54252911).

It can be written as a sum of positive squares in only one way, i.e., 53144100 + 1108809 = 7290^2 + 1053^2 .

It is not a de Polignac number, because 54252909 - 2¹ = 54252907 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54252907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2427 + ... + 10695.

Almost surely, 2^54252909 is an apocalyptic number.

It is an amenable number.

54252909 is a deficient number, since it is larger than the sum of its proper divisors (27132161).

54252909 is an frugal number, since it uses more digits than its factorization.

54252909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8293 (or 8272 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 54252909 is about 7365.6574044684. The cubic root of 54252909 is about 378.5654801622.

The spelling of 54252909 in words is "fifty-four million, two hundred fifty-two thousand, nine hundred nine".