51407072 has 24 divisors (see below), whose sum is σ = 101388672. Its totient is φ = 25657600.

The previous prime is 51407063. The next prime is 51407087. The reversal of 51407072 is 27070415.

It is a super-2 number, since 2×51407072² = 5285374103226368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23297 + ... + 25407.

It is an arithmetic number, because the mean of its divisors is an integer number (4224528).

Almost surely, 2^51407072 is an apocalyptic number.

It is an amenable number.

51407072 is a deficient number, since it is larger than the sum of its proper divisors (49981600).

51407072 is a wasteful number, since it uses less digits than its factorization.

51407072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 51407072 is about 7169.8725232740. The cubic root of 51407072 is about 371.8270286919.

Adding to 51407072 its reverse (27070415), we get a palindrome (78477487).

The spelling of 51407072 in words is "fifty-one million, four hundred seven thousand, seventy-two".