54172969 has 2 divisors, whose sum is σ = 54172970. Its totient is φ = 54172968.

The previous prime is 54172967. The next prime is 54172997. The reversal of 54172969 is 96927145.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 3193369 = 7140^2 + 1787^2 .

It is a cyclic number.

It is not a de Polignac number, because 54172969 - 2¹ = 54172967 is a prime.

It is a super-3 number, since 3×54172969³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 54172967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (54172967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27086484 + 27086485.

It is an arithmetic number, because the mean of its divisors is an integer number (27086485).

Almost surely, 2^54172969 is an apocalyptic number.

It is an amenable number.

54172969 is a deficient number, since it is larger than the sum of its proper divisors (1).

54172969 is an equidigital number, since it uses as much as digits as its factorization.

54172969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 54172969 is about 7360.2288687241. The cubic root of 54172969 is about 378.3794538835.

The spelling of 54172969 in words is "fifty-four million, one hundred seventy-two thousand, nine hundred sixty-nine".