53047830 has 32 divisors (see below), whose sum is σ = 138889728. Its totient is φ = 12860000.

The previous prime is 53047811. The next prime is 53047831. The reversal of 53047830 is 3874035.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53047831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80046 + ... + 80705.

It is an arithmetic number, because the mean of its divisors is an integer number (4340304).

Almost surely, 2^53047830 is an apocalyptic number.

53047830 is an abundant number, since it is smaller than the sum of its proper divisors (85841898).

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

53047830 is a wasteful number, since it uses less digits than its factorization.

53047830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160772.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 53047830 is about 7283.3941263672. The cubic root of 53047830 is about 375.7415371384.

The spelling of 53047830 in words is "fifty-three million, forty-seven thousand, eight hundred thirty".