51009740 has 24 divisors (see below), whose sum is σ = 109734912. Its totient is φ = 19905920.

The previous prime is 51009731. The next prime is 51009769. The reversal of 51009740 is 4790015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30284 + ... + 31923.

It is an arithmetic number, because the mean of its divisors is an integer number (4572288).

Almost surely, 2^51009740 is an apocalyptic number.

It is an amenable number.

51009740 is an abundant number, since it is smaller than the sum of its proper divisors (58725172).

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

51009740 is a wasteful number, since it uses less digits than its factorization.

51009740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62257 (or 62255 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 51009740 is about 7142.1103323878. The cubic root of 51009740 is about 370.8665833363.

Adding to 51009740 its reverse (4790015), we get a palindrome (55799755).

The spelling of 51009740 in words is "fifty-one million, nine thousand, seven hundred forty".