51523242 has 8 divisors (see below), whose sum is σ = 103046496. Its totient is φ = 17174412.

The previous prime is 51523237. The next prime is 51523249. The reversal of 51523242 is 24232515.

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

51523242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51523249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4293598 + ... + 4293609.

It is an arithmetic number, because the mean of its divisors is an integer number (12880812).

Almost surely, 2^51523242 is an apocalyptic number.

51523242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51523242 is a wasteful number, since it uses less digits than its factorization.

51523242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587212.

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

The square root of 51523242 is about 7177.9692114135. The cubic root of 51523242 is about 372.1069036033.

Adding to 51523242 its reverse (24232515), we get a palindrome (75755757).

The spelling of 51523242 in words is "fifty-one million, five hundred twenty-three thousand, two hundred forty-two".