51353620 has 24 divisors (see below), whose sum is σ = 107993088. Its totient is φ = 20512800.

The previous prime is 51353611. The next prime is 51353629. The reversal of 51353620 is 2635315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51353611) and next prime (51353629).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51353629) by changing a digit.

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, 18525 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (4499712).

Almost surely, 2^51353620 is an apocalyptic number.

It is an amenable number.

51353620 is an abundant number, since it is smaller than the sum of its proper divisors (56639468).

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

51353620 is a wasteful number, since it uses less digits than its factorization.

51353620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591 (or 3589 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 51353620 is about 7166.1440119495. The cubic root of 51353620 is about 371.6981113397.

Adding to 51353620 its reverse (2635315), we get a palindrome (53988935).

The spelling of 51353620 in words is "fifty-one million, three hundred fifty-three thousand, six hundred twenty".