54100861 has 4 divisors (see below), whose sum is σ = 54230400. Its totient is φ = 53971324.

The previous prime is 54100831. The next prime is 54100883. The reversal of 54100861 is 16800145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54100861 - 2¹⁹ = 53576573 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 (54100801) 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, 64141 + ... + 64978.

It is an arithmetic number, because the mean of its divisors is an integer number (13557600).

Almost surely, 2^54100861 is an apocalyptic number.

It is an amenable number.

54100861 is a deficient number, since it is larger than the sum of its proper divisors (129539).

54100861 is a wasteful number, since it uses less digits than its factorization.

54100861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129538.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 54100861 is about 7355.3287486012. The cubic root of 54100861 is about 378.2114961927.

The spelling of 54100861 in words is "fifty-four million, one hundred thousand, eight hundred sixty-one".