51357898 has 12 divisors (see below), whose sum is σ = 79778070. Its totient is φ = 24767120.

The previous prime is 51357881. The next prime is 51357899. The reversal of 51357898 is 89875315.

51357898 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 3 ways, for example, as 47983329 + 3374569 = 6927^2 + 1837^2 .

It is not an unprimeable number, because it can be changed into a prime (51357899) by changing a digit.

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, 54108 + ... + 55048.

Almost surely, 2^51357898 is an apocalyptic number.

51357898 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51357898 is a deficient number, since it is larger than the sum of its proper divisors (28420172).

51357898 is an frugal number, since it uses more digits than its factorization.

51357898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 972 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 51357898 is about 7166.4424926179. The cubic root of 51357898 is about 371.7084324580.

The spelling of 51357898 in words is "fifty-one million, three hundred fifty-seven thousand, eight hundred ninety-eight".