53857990 has 16 divisors (see below), whose sum is σ = 97835760. Its totient is φ = 21345120.

The previous prime is 53857963. The next prime is 53857997. The reversal of 53857990 is 9975835.

It is a self number, because there is not a number n which added to its sum of digits gives 53857990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53857997) 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, 23616 + ... + 25795.

It is an arithmetic number, because the mean of its divisors is an integer number (6114735).

Almost surely, 2^53857990 is an apocalyptic number.

53857990 is a deficient number, since it is larger than the sum of its proper divisors (43977770).

53857990 is a wasteful number, since it uses less digits than its factorization.

53857990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49527.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 53857990 is about 7338.8003106775. The cubic root of 53857990 is about 377.6446881884.

The spelling of 53857990 in words is "fifty-three million, eight hundred fifty-seven thousand, nine hundred ninety".