54917965 has 4 divisors (see below), whose sum is σ = 65901564. Its totient is φ = 43934368.

The previous prime is 54917963. The next prime is 54917969. The reversal of 54917965 is 56971945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56971945 = 5 ⋅11394389.

It can be written as a sum of positive squares in 2 ways, for example, as 12264004 + 42653961 = 3502^2 + 6531^2 .

It is a cyclic number.

It is not a de Polignac number, because 54917965 - 2¹ = 54917963 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 (54917963) 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, 5491792 + ... + 5491801.

It is an arithmetic number, because the mean of its divisors is an integer number (16475391).

Almost surely, 2^54917965 is an apocalyptic number.

It is an amenable number.

54917965 is a deficient number, since it is larger than the sum of its proper divisors (10983599).

54917965 is a wasteful number, since it uses less digits than its factorization.

54917965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10983598.

The product of its digits is 340200, while the sum is 46.

The square root of 54917965 is about 7410.6656246251. The cubic root of 54917965 is about 380.1060761112.

It can be divided in two parts, 5491 and 7965, that added together give a square (13456 = 116²).

The spelling of 54917965 in words is "fifty-four million, nine hundred seventeen thousand, nine hundred sixty-five".