54537986 has 4 divisors (see below), whose sum is σ = 81806982. Its totient is φ = 27268992.

The previous prime is 54537983. The next prime is 54538013. The reversal of 54537986 is 68973545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 970225 = 7319^2 + 985^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 54537986.

It is not an unprimeable number, because it can be changed into a prime (54537983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13634495 + ... + 13634498.

Almost surely, 2^54537986 is an apocalyptic number.

54537986 is a deficient number, since it is larger than the sum of its proper divisors (27268996).

54537986 is a wasteful number, since it uses less digits than its factorization.

54537986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27268995.

The product of its digits is 907200, while the sum is 47.

The square root of 54537986 is about 7384.9838185334. The cubic root of 54537986 is about 379.2273914308.

The spelling of 54537986 in words is "fifty-four million, five hundred thirty-seven thousand, nine hundred eighty-six".