53855660 has 48 divisors (see below), whose sum is σ = 120657600. Its totient is φ = 20121600.

The previous prime is 53855653. The next prime is 53855723. The reversal of 53855660 is 6655835.

It is a super-2 number, since 2×53855660² = 5800864228071200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50816 + ... + 51864.

It is an arithmetic number, because the mean of its divisors is an integer number (2513700).

Almost surely, 2^53855660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53855660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60328800).

53855660 is an abundant number, since it is smaller than the sum of its proper divisors (66801940).

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

53855660 is a wasteful number, since it uses less digits than its factorization.

53855660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 53855660 is about 7338.6415636683. The cubic root of 53855660 is about 377.6392422319.

The spelling of 53855660 in words is "fifty-three million, eight hundred fifty-five thousand, six hundred sixty".