54417861 has 12 divisors (see below), whose sum is σ = 80728492. Its totient is φ = 35297856.

The previous prime is 54417851. The next prime is 54417889. The reversal of 54417861 is 16871445.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32148900 + 22268961 = 5670^2 + 4719^2 .

It is not a de Polignac number, because 54417861 - 2⁵ = 54417829 is a prime.

It is a super-2 number, since 2×54417861² = 5922607191630642, which contains 22 as substring.

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 (54417821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81376 + ... + 82041.

Almost surely, 2^54417861 is an apocalyptic number.

It is an amenable number.

54417861 is a deficient number, since it is larger than the sum of its proper divisors (26310631).

54417861 is a wasteful number, since it uses less digits than its factorization.

54417861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163460 (or 163457 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 54417861 is about 7376.8462773735. The cubic root of 54417861 is about 378.9487588612.

It can be divided in two parts, 54417 and 861, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 54417861 in words is "fifty-four million, four hundred seventeen thousand, eight hundred sixty-one".