54649990 has 32 divisors (see below), whose sum is σ = 102095136. Its totient is φ = 21047040.

The previous prime is 54649963. The next prime is 54649997. The reversal of 54649990 is 9994645.

It is a self number, because there is not a number n which added to its sum of digits gives 54649990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54649997) 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 15 ways as a sum of consecutive naturals, for example, 30520 + ... + 32260.

It is an arithmetic number, because the mean of its divisors is an integer number (3190473).

Almost surely, 2^54649990 is an apocalyptic number.

54649990 is a deficient number, since it is larger than the sum of its proper divisors (47445146).

54649990 is a wasteful number, since it uses less digits than its factorization.

54649990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 54649990 is about 7392.5631549551. The cubic root of 54649990 is about 379.4868188147.

The spelling of 54649990 in words is "fifty-four million, six hundred forty-nine thousand, nine hundred ninety".