51943419 has 12 divisors (see below), whose sum is σ = 81850392. Its totient is φ = 31480800.

The previous prime is 51943417. The next prime is 51943421. The reversal of 51943419 is 91434915.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51943417) and next prime (51943421).

It is not a de Polignac number, because 51943419 - 2¹ = 51943417 is a prime.

It is a super-2 number, since 2×51943419² = 5396237554819122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51943417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262242 + ... + 262439.

It is an arithmetic number, because the mean of its divisors is an integer number (6820866).

Almost surely, 2^51943419 is an apocalyptic number.

51943419 is a deficient number, since it is larger than the sum of its proper divisors (29906973).

51943419 is a wasteful number, since it uses less digits than its factorization.

51943419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524698 (or 524695 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 51943419 is about 7207.1782966706. The cubic root of 51943419 is about 373.1156888496.

The spelling of 51943419 in words is "fifty-one million, nine hundred forty-three thousand, four hundred nineteen".