54765640 has 32 divisors (see below), whose sum is σ = 123497280. Its totient is φ = 21857472.

The previous prime is 54765631. The next prime is 54765643. The reversal of 54765640 is 4656745.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 54765640.

It is not an unprimeable number, because it can be changed into a prime (54765643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20629 + ... + 23131.

It is an arithmetic number, because the mean of its divisors is an integer number (3859290).

Almost surely, 2^54765640 is an apocalyptic number.

It is an amenable number.

54765640 is an abundant number, since it is smaller than the sum of its proper divisors (68731640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54765640 is a wasteful number, since it uses less digits than its factorization.

54765640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061 (or 3057 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 54765640 is about 7400.3810712692. The cubic root of 54765640 is about 379.7543194960.

The spelling of 54765640 in words is "fifty-four million, seven hundred sixty-five thousand, six hundred forty".