54287691 has 8 divisors (see below), whose sum is σ = 73375440. Its totient is φ = 35695872.

The previous prime is 54287689. The next prime is 54287711. The reversal of 54287691 is 19678245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54287691 - 2¹ = 54287689 is a prime.

It is a super-2 number, since 2×54287691² = 5894306788222962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54287791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123726 + ... + 124163.

It is an arithmetic number, because the mean of its divisors is an integer number (9171930).

Almost surely, 2^54287691 is an apocalyptic number.

54287691 is a deficient number, since it is larger than the sum of its proper divisors (19087749).

54287691 is a wasteful number, since it uses less digits than its factorization.

54287691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247965.

The product of its digits is 120960, while the sum is 42.

The square root of 54287691 is about 7368.0181188702. The cubic root of 54287691 is about 378.6463633928.

The spelling of 54287691 in words is "fifty-four million, two hundred eighty-seven thousand, six hundred ninety-one".