51026740 has 48 divisors (see below), whose sum is σ = 110496960. Its totient is φ = 19784960.

The previous prime is 51026687. The next prime is 51026791. The reversal of 51026740 is 4762015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97680 + ... + 98200.

It is an arithmetic number, because the mean of its divisors is an integer number (2302020).

Almost surely, 2^51026740 is an apocalyptic number.

It is an amenable number.

51026740 is an abundant number, since it is smaller than the sum of its proper divisors (59470220).

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

51026740 is a wasteful number, since it uses less digits than its factorization.

51026740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 51026740 is about 7143.3003576778. The cubic root of 51026740 is about 370.9077782901.

Adding to 51026740 its reverse (4762015), we get a palindrome (55788755).

The spelling of 51026740 in words is "fifty-one million, twenty-six thousand, seven hundred forty".