51232542 has 16 divisors (see below), whose sum is σ = 102539520. Its totient is φ = 17065112.

The previous prime is 51232541. The next prime is 51232549. The reversal of 51232542 is 24523215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51232541) 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, 10309 + ... + 14447.

It is an arithmetic number, because the mean of its divisors is an integer number (6408720).

Almost surely, 2^51232542 is an apocalyptic number.

51232542 is an abundant number, since it is smaller than the sum of its proper divisors (51306978).

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

51232542 is a wasteful number, since it uses less digits than its factorization.

51232542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207.

The product of its digits is 2400, while the sum is 24.

The square root of 51232542 is about 7157.6911081717. The cubic root of 51232542 is about 371.4057601234.

Adding to 51232542 its reverse (24523215), we get a palindrome (75755757).

The spelling of 51232542 in words is "fifty-one million, two hundred thirty-two thousand, five hundred forty-two".