54729887 has 4 divisors (see below), whose sum is σ = 54763800. Its totient is φ = 54695976.

The previous prime is 54729877. The next prime is 54729907. The reversal of 54729887 is 78892745.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54729887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54729827) 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, 14408 + ... + 17805.

It is an arithmetic number, because the mean of its divisors is an integer number (13690950).

Almost surely, 2^54729887 is an apocalyptic number.

54729887 is a deficient number, since it is larger than the sum of its proper divisors (33913).

54729887 is a wasteful number, since it uses less digits than its factorization.

54729887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33912.

The product of its digits is 1128960, while the sum is 50.

The square root of 54729887 is about 7397.9650580413. The cubic root of 54729887 is about 379.6716623661.

The spelling of 54729887 in words is "fifty-four million, seven hundred twenty-nine thousand, eight hundred eighty-seven".