51542698 has 12 divisors (see below), whose sum is σ = 78498882. Its totient is φ = 25382280.

The previous prime is 51542671. The next prime is 51542723. The reversal of 51542698 is 89624515.

51542698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43996689 + 7546009 = 6633^2 + 2747^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51542698.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6108 + ... + 11848.

Almost surely, 2^51542698 is an apocalyptic number.

51542698 is a deficient number, since it is larger than the sum of its proper divisors (26956184).

51542698 is an equidigital number, since it uses as much as digits as its factorization.

51542698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877 (or 5810 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 51542698 is about 7179.3243414684. The cubic root of 51542698 is about 372.1537355478.

It can be divided in two parts, 515426 and 98, that added together give a square (515524 = 718²).

The spelling of 51542698 in words is "fifty-one million, five hundred forty-two thousand, six hundred ninety-eight".