51543342 has 12 divisors (see below), whose sum is σ = 111677280. Its totient is φ = 17181108.

The previous prime is 51543341. The next prime is 51543343. The reversal of 51543342 is 24334515.

It is an interprime number because it is at equal distance from previous prime (51543341) and next prime (51543343).

It is a super-2 number, since 2×51543342² = 5313432209057928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1431742 + ... + 1431777.

It is an arithmetic number, because the mean of its divisors is an integer number (9306440).

Almost surely, 2^51543342 is an apocalyptic number.

51543342 is an abundant number, since it is smaller than the sum of its proper divisors (60133938).

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

51543342 is a wasteful number, since it uses less digits than its factorization.

51543342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863527 (or 2863524 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 51543342 is about 7179.3691923455. The cubic root of 51543342 is about 372.1552854990.

Adding to 51543342 its reverse (24334515), we get a palindrome (75877857).

The spelling of 51543342 in words is "fifty-one million, five hundred forty-three thousand, three hundred forty-two".