53143870 has 64 divisors (see below), whose sum is σ = 110496960. Its totient is φ = 18229248.

The previous prime is 53143843. The next prime is 53143873. The reversal of 53143870 is 7834135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53143873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307104 + ... + 307276.

It is an arithmetic number, because the mean of its divisors is an integer number (1726515).

Almost surely, 2^53143870 is an apocalyptic number.

53143870 is an abundant number, since it is smaller than the sum of its proper divisors (57353090).

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

53143870 is a wasteful number, since it uses less digits than its factorization.

53143870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 53143870 is about 7289.9842249486. The cubic root of 53143870 is about 375.9681531424.

The spelling of 53143870 in words is "fifty-three million, one hundred forty-three thousand, eight hundred seventy".