51010740 has 72 divisors (see below), whose sum is σ = 168805728. Its totient is φ = 12365760.

The previous prime is 51010733. The next prime is 51010777. The reversal of 51010740 is 4701015.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10902 + ... + 14861.

It is an arithmetic number, because the mean of its divisors is an integer number (2344524).

Almost surely, 2^51010740 is an apocalyptic number.

It is an amenable number.

51010740 is an abundant number, since it is smaller than the sum of its proper divisors (117794988).

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

51010740 is a wasteful number, since it uses less digits than its factorization.

51010740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25789 (or 25784 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 51010740 is about 7142.1803393642. The cubic root of 51010740 is about 370.8690068222.

Adding to 51010740 its reverse (4701015), we get a palindrome (55711755).

The spelling of 51010740 in words is "fifty-one million, ten thousand, seven hundred forty".