52269781 has 8 divisors (see below), whose sum is σ = 56522880. Its totient is φ = 48147648.

The previous prime is 52269773. The next prime is 52269799. The reversal of 52269781 is 18796225.

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 52269781 - 2³ = 52269773 is a prime.

It is a super-2 number, since 2×52269781² = 5464260011575922, 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 (52269181) 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, 31911 + ... + 33508.

It is an arithmetic number, because the mean of its divisors is an integer number (7065360).

Almost surely, 2^52269781 is an apocalyptic number.

It is an amenable number.

52269781 is a deficient number, since it is larger than the sum of its proper divisors (4253099).

52269781 is a wasteful number, since it uses less digits than its factorization.

52269781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65483.

The product of its digits is 60480, while the sum is 40.

The square root of 52269781 is about 7229.7842983038. The cubic root of 52269781 is about 373.8954901635.

The spelling of 52269781 in words is "fifty-two million, two hundred sixty-nine thousand, seven hundred eighty-one".