54099969 has 24 divisors (see below), whose sum is σ = 91541088. Its totient is φ = 28103040.

The previous prime is 54099959. The next prime is 54099989. The reversal of 54099969 is 96999045.

It is not a de Polignac number, because 54099969 - 2⁴ = 54099953 is a prime.

It is a super-2 number, since 2×54099969² = 5853613291601922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54099959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15112 + ... + 18345.

It is an arithmetic number, because the mean of its divisors is an integer number (3814212).

It is a Proth number, since it is equal to 1651 ⋅ 2¹⁵ + 1 and 1651 < 2¹⁵.

Almost surely, 2^54099969 is an apocalyptic number.

It is an amenable number.

54099969 is a deficient number, since it is larger than the sum of its proper divisors (37441119).

54099969 is a wasteful number, since it uses less digits than its factorization.

54099969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33485 (or 33478 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 51.

The square root of 54099969 is about 7355.2681120405. The cubic root of 54099969 is about 378.2094175658.

The spelling of 54099969 in words is "fifty-four million, ninety-nine thousand, nine hundred sixty-nine".