54987965 has 4 divisors (see below), whose sum is σ = 65985564. Its totient is φ = 43990368.

The previous prime is 54987943. The next prime is 54987991. The reversal of 54987965 is 56978945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56978945 = 5 ⋅11395789.

It can be written as a sum of positive squares in 2 ways, for example, as 22486564 + 32501401 = 4742^2 + 5701^2 .

It is a cyclic number.

It is not a de Polignac number, because 54987965 - 2¹⁰ = 54986941 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 3 ways as a sum of consecutive naturals, for example, 5498792 + ... + 5498801.

It is an arithmetic number, because the mean of its divisors is an integer number (16496391).

Almost surely, 2^54987965 is an apocalyptic number.

It is an amenable number.

54987965 is a deficient number, since it is larger than the sum of its proper divisors (10997599).

54987965 is a wasteful number, since it uses less digits than its factorization.

54987965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10997598.

The product of its digits is 2721600, while the sum is 53.

The square root of 54987965 is about 7415.3870431691. The cubic root of 54987965 is about 380.2675055479.

The spelling of 54987965 in words is "fifty-four million, nine hundred eighty-seven thousand, nine hundred sixty-five".