57643550 has 24 divisors (see below), whose sum is σ = 107465592. Its totient is φ = 23004000.

The previous prime is 57643541. The next prime is 57643559. The reversal of 57643550 is 5534675.

It is an interprime number because it is at equal distance from previous prime (57643541) and next prime (57643559).

It is a self number, because there is not a number n which added to its sum of digits gives 57643550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57643559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25985 + ... + 28115.

It is an arithmetic number, because the mean of its divisors is an integer number (4477733).

Almost surely, 2^57643550 is an apocalyptic number.

57643550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57643550 is a deficient number, since it is larger than the sum of its proper divisors (49822042).

57643550 is a wasteful number, since it uses less digits than its factorization.

57643550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684 (or 2679 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 57643550 is about 7592.3349504616. The cubic root of 57643550 is about 386.2930604863.

The spelling of 57643550 in words is "fifty-seven million, six hundred forty-three thousand, five hundred fifty".