51650194 has 8 divisors (see below), whose sum is σ = 77522508. Its totient is φ = 25809360.

The previous prime is 51650191. The next prime is 51650197. The reversal of 51650194 is 49105615.

It is an interprime number because it is at equal distance from previous prime (51650191) and next prime (51650197).

It can be written as a sum of positive squares in 2 ways, for example, as 33698025 + 17952169 = 5805^2 + 4237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51650191) 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 3 ways as a sum of consecutive naturals, for example, 3217 + ... + 10660.

Almost surely, 2^51650194 is an apocalyptic number.

51650194 is a deficient number, since it is larger than the sum of its proper divisors (25872314).

51650194 is a wasteful number, since it uses less digits than its factorization.

51650194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15740.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51650194 is about 7186.8069404987. The cubic root of 51650194 is about 372.4122736826.

The spelling of 51650194 in words is "fifty-one million, six hundred fifty thousand, one hundred ninety-four".