54966813 has 16 divisors (see below), whose sum is σ = 82532352. Its totient is φ = 32238000.

The previous prime is 54966809. The next prime is 54966817. The reversal of 54966813 is 31866945.

It is an interprime number because it is at equal distance from previous prime (54966809) and next prime (54966817).

It is not a de Polignac number, because 54966813 - 2² = 54966809 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54966817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25843 + ... + 27888.

It is an arithmetic number, because the mean of its divisors is an integer number (5158272).

Almost surely, 2^54966813 is an apocalyptic number.

It is an amenable number.

54966813 is a deficient number, since it is larger than the sum of its proper divisors (27565539).

54966813 is a wasteful number, since it uses less digits than its factorization.

54966813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53776.

The product of its digits is 155520, while the sum is 42.

The square root of 54966813 is about 7413.9606823883. The cubic root of 54966813 is about 380.2187406358.

The spelling of 54966813 in words is "fifty-four million, nine hundred sixty-six thousand, eight hundred thirteen".