54918565 has 16 divisors (see below), whose sum is σ = 71609328. Its totient is φ = 40190976.

The previous prime is 54918541. The next prime is 54918581. The reversal of 54918565 is 56581945.

It can be written as a sum of positive squares in 8 ways, for example, as 4919524 + 49999041 = 2218^2 + 7071^2 .

It is a cyclic number.

It is not a de Polignac number, because 54918565 - 2⁹ = 54918053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3607 + ... + 11083.

It is an arithmetic number, because the mean of its divisors is an integer number (4475583).

Almost surely, 2^54918565 is an apocalyptic number.

It is an amenable number.

54918565 is a deficient number, since it is larger than the sum of its proper divisors (16690763).

54918565 is a wasteful number, since it uses less digits than its factorization.

54918565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7608.

The product of its digits is 216000, while the sum is 43.

The square root of 54918565 is about 7410.7061067081. The cubic root of 54918565 is about 380.1074603748.

It can be divided in two parts, 549185 and 65, that multiplied together give a triangular number (35697025 = T₈₄₄₉).

The spelling of 54918565 in words is "fifty-four million, nine hundred eighteen thousand, five hundred sixty-five".