51943299 has 8 divisors (see below), whose sum is σ = 69381312. Its totient is φ = 34567080.

The previous prime is 51943267. The next prime is 51943349. The reversal of 51943299 is 99234915.

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

It is not a de Polignac number, because 51943299 - 2⁵ = 51943267 is a prime.

It is a super-2 number, since 2×51943299² = 5396212622006802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51943299.

It is not an unprimeable number, because it can be changed into a prime (51943219) 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, 13449 + ... + 16874.

It is an arithmetic number, because the mean of its divisors is an integer number (8672664).

Almost surely, 2^51943299 is an apocalyptic number.

51943299 is a deficient number, since it is larger than the sum of its proper divisors (17438013).

51943299 is a wasteful number, since it uses less digits than its factorization.

51943299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30897.

The product of its digits is 87480, while the sum is 42.

The square root of 51943299 is about 7207.1699716324. The cubic root of 51943299 is about 373.1154015246.

The spelling of 51943299 in words is "fifty-one million, nine hundred forty-three thousand, two hundred ninety-nine".