53442870 has 96 divisors (see below), whose sum is σ = 141668352. Its totient is φ = 12894336.

The previous prime is 53442833. The next prime is 53442881. The reversal of 53442870 is 7824435.

It is a super-2 number, since 2×53442870² = 5712280707673800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 420747 + ... + 420873.

It is an arithmetic number, because the mean of its divisors is an integer number (1475712).

Almost surely, 2^53442870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53442870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70834176).

53442870 is an abundant number, since it is smaller than the sum of its proper divisors (88225482).

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

53442870 is a wasteful number, since it uses less digits than its factorization.

53442870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 53442870 is about 7310.4630496296. The cubic root of 53442870 is about 376.6719302090.

The spelling of 53442870 in words is "fifty-three million, four hundred forty-two thousand, eight hundred seventy".