54166538 has 4 divisors (see below), whose sum is σ = 81249810. Its totient is φ = 27083268.

The previous prime is 54166537. The next prime is 54166571. The reversal of 54166538 is 83566145.

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., 45387169 + 8779369 = 6737^2 + 2963^2 .

It is not an unprimeable number, because it can be changed into a prime (54166537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13541633 + ... + 13541636.

Almost surely, 2^54166538 is an apocalyptic number.

54166538 is a deficient number, since it is larger than the sum of its proper divisors (27083272).

54166538 is a wasteful number, since it uses less digits than its factorization.

54166538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27083271.

The product of its digits is 86400, while the sum is 38.

The square root of 54166538 is about 7359.7919807560. The cubic root of 54166538 is about 378.3644805207.

The spelling of 54166538 in words is "fifty-four million, one hundred sixty-six thousand, five hundred thirty-eight".