51390298 has 16 divisors (see below), whose sum is σ = 78732000. Its totient is φ = 25150192.

The previous prime is 51390293. The next prime is 51390301. The reversal of 51390298 is 89209315.

It is not an unprimeable number, because it can be changed into a prime (51390293) 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, 30933 + ... + 32551.

It is an arithmetic number, because the mean of its divisors is an integer number (4920750).

Almost surely, 2^51390298 is an apocalyptic number.

51390298 is a deficient number, since it is larger than the sum of its proper divisors (27341702).

51390298 is a wasteful number, since it uses less digits than its factorization.

51390298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 51390298 is about 7168.7026720321. The cubic root of 51390298 is about 371.7865822135.

The spelling of 51390298 in words is "fifty-one million, three hundred ninety thousand, two hundred ninety-eight".