54609861 has 4 divisors (see below), whose sum is σ = 72813152. Its totient is φ = 36406572.

The previous prime is 54609853. The next prime is 54609881. The reversal of 54609861 is 16890645.

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 not a de Polignac number, because 54609861 - 2³ = 54609853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54609851) 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, 9101641 + ... + 9101646.

It is an arithmetic number, because the mean of its divisors is an integer number (18203288).

Almost surely, 2^54609861 is an apocalyptic number.

It is an amenable number.

54609861 is a deficient number, since it is larger than the sum of its proper divisors (18203291).

54609861 is a wasteful number, since it uses less digits than its factorization.

54609861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18203290.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 54609861 is about 7389.8485099493. The cubic root of 54609861 is about 379.3939114757.

The spelling of 54609861 in words is "fifty-four million, six hundred nine thousand, eight hundred sixty-one".