51352542 has 20 divisors (see below), whose sum is σ = 115068096. Its totient is φ = 17117460.

The previous prime is 51352531. The next prime is 51352549. The reversal of 51352542 is 24525315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51352549) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158334 + ... + 158657.

Almost surely, 2^51352542 is an apocalyptic number.

51352542 is an abundant number, since it is smaller than the sum of its proper divisors (63715554).

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

51352542 is a wasteful number, since it uses less digits than its factorization.

51352542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317005 (or 316996 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 51352542 is about 7166.0687967672. The cubic root of 51352542 is about 371.6955104625.

Adding to 51352542 its reverse (24525315), we get a palindrome (75877857).

The spelling of 51352542 in words is "fifty-one million, three hundred fifty-two thousand, five hundred forty-two".