54626661 has 24 divisors (see below), whose sum is σ = 83827224. Its totient is φ = 34160640.

The previous prime is 54626657. The next prime is 54626669. The reversal of 54626661 is 16662645.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14062500 + 40564161 = 3750^2 + 6369^2 .

It is not a de Polignac number, because 54626661 - 2² = 54626657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54626669) 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 in 23 ways as a sum of consecutive naturals, for example, 84901 + ... + 85541.

It is an arithmetic number, because the mean of its divisors is an integer number (3492801).

Almost surely, 2^54626661 is an apocalyptic number.

54626661 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

54626661 is a deficient number, since it is larger than the sum of its proper divisors (29200563).

54626661 is a wasteful number, since it uses less digits than its factorization.

54626661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1218 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 54626661 is about 7390.9851170192. The cubic root of 54626661 is about 379.4328126565.

The spelling of 54626661 in words is "fifty-four million, six hundred twenty-six thousand, six hundred sixty-one".