51403542 has 8 divisors (see below), whose sum is σ = 102807096. Its totient is φ = 17134512.

The previous prime is 51403537. The next prime is 51403543. The reversal of 51403542 is 24530415.

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

51403542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51403543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4283623 + ... + 4283634.

It is an arithmetic number, because the mean of its divisors is an integer number (12850887).

Almost surely, 2^51403542 is an apocalyptic number.

51403542 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.

51403542 is a wasteful number, since it uses less digits than its factorization.

51403542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567262.

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

The square root of 51403542 is about 7169.6263500966. The cubic root of 51403542 is about 371.8185176745.

Adding to 51403542 its reverse (24530415), we get a palindrome (75933957).

The spelling of 51403542 in words is "fifty-one million, four hundred three thousand, five hundred forty-two".