54729691 has 4 divisors (see below), whose sum is σ = 54854800. Its totient is φ = 54604584.

The previous prime is 54729677. The next prime is 54729737. The reversal of 54729691 is 19692745.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19692745 = 5 ⋅3938549.

It is a cyclic number.

It is not a de Polignac number, because 54729691 - 2¹¹ = 54727643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54729091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61896 + ... + 62773.

It is an arithmetic number, because the mean of its divisors is an integer number (13713700).

Almost surely, 2^54729691 is an apocalyptic number.

54729691 is a deficient number, since it is larger than the sum of its proper divisors (125109).

54729691 is a wasteful number, since it uses less digits than its factorization.

54729691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125108.

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

The square root of 54729691 is about 7397.9518111434. The cubic root of 54729691 is about 379.6712091358.

The spelling of 54729691 in words is "fifty-four million, seven hundred twenty-nine thousand, six hundred ninety-one".