54865966 has 4 divisors (see below), whose sum is σ = 82298952. Its totient is φ = 27432982.

The previous prime is 54865957. The next prime is 54865969. The reversal of 54865966 is 66956845.

It is a happy number.

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

It is a super-2 number, since 2×54865966² = 6020548450226312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54865969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13716490 + ... + 13716493.

It is an arithmetic number, because the mean of its divisors is an integer number (20574738).

Almost surely, 2^54865966 is an apocalyptic number.

54865966 is a deficient number, since it is larger than the sum of its proper divisors (27432986).

54865966 is a wasteful number, since it uses less digits than its factorization.

54865966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27432985.

The product of its digits is 1555200, while the sum is 49.

The square root of 54865966 is about 7407.1564044510. The cubic root of 54865966 is about 379.9860705882.

The spelling of 54865966 in words is "fifty-four million, eight hundred sixty-five thousand, nine hundred sixty-six".