51206342 has 16 divisors (see below), whose sum is σ = 83950992. Its totient is φ = 23231520.

The previous prime is 51206341. The next prime is 51206357. The reversal of 51206342 is 24360215.

It is a super-2 number, since 2×51206342² = 5244178922041928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51206341) 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, 11588 + ... + 15384.

It is an arithmetic number, because the mean of its divisors is an integer number (5246937).

Almost surely, 2^51206342 is an apocalyptic number.

51206342 is a deficient number, since it is larger than the sum of its proper divisors (32744650).

51206342 is a wasteful number, since it uses less digits than its factorization.

51206342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51206342 is about 7155.8606749992. The cubic root of 51206342 is about 371.3424378041.

Adding to 51206342 its reverse (24360215), we get a palindrome (75566557).

The spelling of 51206342 in words is "fifty-one million, two hundred six thousand, three hundred forty-two".