54126691 has 4 divisors (see below), whose sum is σ = 57310632. Its totient is φ = 50942752.

The previous prime is 54126689. The next prime is 54126749. The reversal of 54126691 is 19662145.

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

It is a cyclic number.

It is not a de Polignac number, because 54126691 - 2¹ = 54126689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54126491) 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, 1591945 + ... + 1591978.

It is an arithmetic number, because the mean of its divisors is an integer number (14327658).

Almost surely, 2^54126691 is an apocalyptic number.

54126691 is a deficient number, since it is larger than the sum of its proper divisors (3183941).

54126691 is a wasteful number, since it uses less digits than its factorization.

54126691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183940.

The product of its digits is 12960, while the sum is 34.

The square root of 54126691 is about 7357.0844089218. The cubic root of 54126691 is about 378.2716779128.

The spelling of 54126691 in words is "fifty-four million, one hundred twenty-six thousand, six hundred ninety-one".