51202340 has 48 divisors (see below), whose sum is σ = 129360000. Its totient is φ = 16630272.

The previous prime is 51202331. The next prime is 51202343. The reversal of 51202340 is 4320215.

It is not an unprimeable number, because it can be changed into a prime (51202343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6965 + ... + 12284.

It is an arithmetic number, because the mean of its divisors is an integer number (2695000).

Almost surely, 2^51202340 is an apocalyptic number.

It is an amenable number.

51202340 is an abundant number, since it is smaller than the sum of its proper divisors (78157660).

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

51202340 is a wasteful number, since it uses less digits than its factorization.

51202340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19284 (or 19282 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51202340 is about 7155.5810386020. The cubic root of 51202340 is about 371.3327635392.

Adding to 51202340 its reverse (4320215), we get a palindrome (55522555).

The spelling of 51202340 in words is "fifty-one million, two hundred two thousand, three hundred forty".