52869781 has 8 divisors (see below), whose sum is σ = 54664064. Its totient is φ = 51094800.

The previous prime is 52869757. The next prime is 52869809. The reversal of 52869781 is 18796825.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52869781 - 2⁵ = 52869749 is a prime.

It is a super-2 number, since 2×52869781² = 5590427485975922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52869731) 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, 856 + ... + 10318.

It is an arithmetic number, because the mean of its divisors is an integer number (6833008).

Almost surely, 2^52869781 is an apocalyptic number.

It is an amenable number.

52869781 is a deficient number, since it is larger than the sum of its proper divisors (1794283).

52869781 is a wasteful number, since it uses less digits than its factorization.

52869781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651.

The product of its digits is 241920, while the sum is 46.

The square root of 52869781 is about 7271.1609114364. The cubic root of 52869781 is about 375.3206880500.

The spelling of 52869781 in words is "fifty-two million, eight hundred sixty-nine thousand, seven hundred eighty-one".