51404542 has 16 divisors (see below), whose sum is σ = 88214112. Its totient is φ = 22007520.

The previous prime is 51404539. The next prime is 51404567. The reversal of 51404542 is 24540415.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25068 + ... + 27040.

It is an arithmetic number, because the mean of its divisors is an integer number (5513382).

Almost surely, 2^51404542 is an apocalyptic number.

51404542 is a deficient number, since it is larger than the sum of its proper divisors (36809570).

51404542 is a wasteful number, since it uses less digits than its factorization.

51404542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 51404542 is about 7169.6960883987. The cubic root of 51404542 is about 371.8209287671.

Adding to 51404542 its reverse (24540415), we get a palindrome (75944957).

The spelling of 51404542 in words is "fifty-one million, four hundred four thousand, five hundred forty-two".