51320562 has 16 divisors (see below), whose sum is σ = 105952512. Its totient is φ = 16554960.

The previous prime is 51320527. The next prime is 51320597. The reversal of 51320562 is 26502315.

It is an interprime number because it is at equal distance from previous prime (51320527) and next prime (51320597).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137773 + ... + 138144.

It is an arithmetic number, because the mean of its divisors is an integer number (6622032).

Almost surely, 2^51320562 is an apocalyptic number.

51320562 is an abundant number, since it is smaller than the sum of its proper divisors (54631950).

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

51320562 is a wasteful number, since it uses less digits than its factorization.

51320562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275953.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 51320562 is about 7163.8371003255. The cubic root of 51320562 is about 371.6183361537.

Adding to 51320562 its reverse (26502315), we get a palindrome (77822877).

The spelling of 51320562 in words is "fifty-one million, three hundred twenty thousand, five hundred sixty-two".