54666658 has 4 divisors (see below), whose sum is σ = 81999990. Its totient is φ = 27333328.

The previous prime is 54666641. The next prime is 54666659. The reversal of 54666658 is 85666645.

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., 45198729 + 9467929 = 6723^2 + 3077^2 .

It is not an unprimeable number, because it can be changed into a prime (54666659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13666663 + ... + 13666666.

Almost surely, 2^54666658 is an apocalyptic number.

54666658 is a deficient number, since it is larger than the sum of its proper divisors (27333332).

54666658 is a wasteful number, since it uses less digits than its factorization.

54666658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27333331.

The product of its digits is 1036800, while the sum is 46.

The square root of 54666658 is about 7393.6904181877. The cubic root of 54666658 is about 379.5253954814.

The spelling of 54666658 in words is "fifty-four million, six hundred sixty-six thousand, six hundred fifty-eight".