51100742 has 64 divisors (see below), whose sum is σ = 102643200. Its totient is φ = 18470400.

The previous prime is 51100729. The next prime is 51100757. The reversal of 51100742 is 24700115.

51100742 = 244² + 245² + ... + 551².

51100742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51100742² = 5222571665901128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342884 + ... + 343032.

It is an arithmetic number, because the mean of its divisors is an integer number (1603800).

Almost surely, 2^51100742 is an apocalyptic number.

51100742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

51100742 is a wasteful number, since it uses less digits than its factorization.

51100742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 51100742 is about 7148.4782996103. The cubic root of 51100742 is about 371.0869958221.

Adding to 51100742 its reverse (24700115), we get a palindrome (75800857).

The spelling of 51100742 in words is "fifty-one million, one hundred thousand, seven hundred forty-two".